420 day, when thousands will light up marijuana and what is part of san francisco culture. this is what 420 day looked like on hippie hill on golden gate park. >> we just here to chill. >> reporter: and this is what it looked like at harborside health care in oakland where joe cha keeny and his wife decided to try medical marijuana for the first time. >> hope to get some pain relief mainly. >> reporter: how old are you? >> 87. >> cannabis is being used mostly for intoxication purposes. what you see here is cannabis being used mostly for wellness purposes. >> reporter: fortune just named steve did i angelo one of the top seven influencers in the marijuana industry. this is the biggest dispensary in the country, serving 1500 people a day. inside this lab, they extract compounds from cannabis to create capsules and ointments. >> patients instead of, say, going and buying a gram or two of cannabis flowers and trying to figure out how many hits they should take, they know exactly how many milligrams of exactly which therapeutically active compound they're getting. >> reporter: in california several initiatives are gathering signatures to legitimize recreational pot for adults over 21. what could potentially be the last illegal 420 day in san francisco, police left the crowd alone but zeroed in on parents. >> there were four parent that's we came into contact that had very small children. >> reporter: they were escorted out, those parents at least. one hot dog vendor was arrested. but otherwise for most of these folks it's just a very chill, peaceful afternoon in the park. reporting live in san francisco, leslie brinkley, abc 7 news. >> thank you so much. even caltrain is get noog the action today, send egg tweet, we'd like to remind riders there is no toking on caltrain or at stations. please sell bra medicaid in a responsible location. the inspiration behind the gathering comes from marin county. a group of san rafael high school students call them the waldos in the early '70s because they would hang out against the wall. this is 1971 after school. they would speak about finding this cannabis pot they had heard about and wanted to search for. they would meet every day after school at 4:20 p.m. and they coined the term 420. they would talk about it amongst the parents and nobody knew what 420 was. but they all knew because they were in the group. the students by the way never found the crop. it is a bhueautiful day, bu changes are on the way. >> spencer christian is now here with the accuweather update. >> it is a lovely weather all across the bay area, mainly sunny skies at the moment. may not last very lofrn. here is live doppler 7 hd. 24-hour temperature change is significant. notice most locations anywhere from one degree cooler than at this hour yesterday to nine degrees cooler at santa rosa. no change at half moon bay. 69 in san francisco, 73 at oakland, 75 fremont, san jose 77, 84 at los gatos. 64 at half moon bay. although the weather is calm and pleasant, the seas are rough. we have a beach hazard statement in effect for tomorrow. there's a dangerous strong rip currents and breakers as the wave heights begin to grow. here's our forecast animation starting 7:00 p.m. notice an increase of clouds overnight, possible sprinkles by tomorrow morning at 5:00 as the morning commute gets under way. we'll see sprinkles scattered about the bay area during the daytime as well as early morning. then overnight tomorrow into friday morning, rain arrives. friday showers just in time for the friday morning commute. i'll give you a look at how much rain we're going to get and how long it's going to last in just a moment. >> thank you, spencer. drivers are in fear after yet another fatal shooting on an east bay freeway. >> it happened on highway 4 in pittsburg last night, the 18th shooting since last november on an east bay freeway. >> reporter: last night's shooting was there on highway 4. it came through that fence and ended here on california street. it is unsolved but not all of them are. an april 1st shooting on highway 4 has resulted in an arrest. you would think multi-agency police task forces would be investigating all of these. it's hard to find an agency to talk to about that. but we do have more about last night's incident. this afternoon, these three young men lit candles at the spot where the car came to rest. we know the victim as a 28-year-old antioch man. they know him as 8-ball. and their memorial wished him peace. the shooting happened last night just after 8:00 with the victim's car heading west near reason avenue when he was shot, crashed through a fence and onto california street. the crime kept nan from getting home. >> i could tell by the scene something bad happened. there were a lot of unmarked cars blocked off here, police cars. i knew somebody had to die tlnchts was the 18th shooting on east bay freeways since november of last year. the majority happened at night, most gang related. police say that means the victim was targeted by the shooter and they weren't random. >> i think a lot of it is also a crime of opportunity, if and when they see somebody they're feuding with on the freeway. it happens there. unfortunately. >> reporter: but for those traveling at night, there is concern and the belief that these are crimes of opportunity won't satisfy everyone. >> that's something i have thought of in the past. it could be an innocent person driving by, could get shot as well. >> reporter: the chp is the lead agency in the investigation, although they're getting help from pittsburg police and other local departments. chp is not giving on-camera interviews at this time. some locals we talked to say they aren't living in fear. >> whatever is going on between him and whoever shot him or something, i mean, i feel safe. >> my first impression is probably it wouldn't happen to me. >> it's too bad it's got to go down like that. a lot of people get hurt, you know? >> reporter: eric thomas, abc 7 news. traffic on 8 a 0 in union city is moving after an accident crippled the morning commute. sky 7 hd was over the scene where lanes were closed in both directions. it happened just before 8:00. traffic was moving again by 11:00. the highway patrol investigating a fatal single vehicle crash on northbound highway 17 near lexington reservoir. a flatbed truck went off the highway near bear creek road around 1:30 p.m. it fell 100 feet down an embankment. the driver died at the scene. a 3-year-old girl was hit by a car this afternoon in east oakland at 98th avenue and birch street shortly after noon. sky 7 hd was overhead after the incident. the driver of the car stopped and cooperated with police. the girl is expected to recover. a shock for the family of an 8-year-old girl who was shot and killed in oakland. >> darnell williams now on trial for murder insisted investigators reexamine his cell phone records. he thought it would help his defense. it did not. >> abc 7 news reporter melanie woodrow spoke with the family and joins us outside the al immediate dua count yoi courthouse. >> reporter: the people rested their case today. alicia's grandfather says he's somewhat dumbfound by this latest development but not entirely surprised. he says the man who is accused of shooting and killing his granddaughter has pulled shenanigans during the trial. he's hoping this late he one will bring the family justice. this picture of little alicia flashing a smile and peace sign fingers is her grandfather's favorite. >> she touched everyone's life. >> reporter: darnell williams is accused of shooting and killing her 13 riddle for examping this bullet holes. >> some of the evidence is really heart wrenching. >> reporter: now new evidence, suspect darnell williams insisting investigators reexamine his cell phone records. >> the phone was one of the main pieces of evidence that i've seen that got him into the trouble. >> reporter: fremont digital computer forensics expert ken bryant used new software finding more imajz of guns on williams' phone that could have been used in the murder. in 2008, abc 7 news covered bryant when he was a student studying cell phone forensics. >> i haven't seen that many cases where somebody lael really tried to bring up evidence almost on themselves rnchtsz the defense attorneys did not support the idea. >> he doesn't seem like the brightest person. >> reporter: alicia ales grandfather says he's not able to attend court every day. >> any step closer to closure is good news. great news. >> reporter: for the family of the little girl known as ladybug, closure is justice. >> as long as it's the right person and it's solved, i'll be happy. at least to some degree. >> reporter: with new evidence possibly making that more likely. in oakland, abc 7 news. take a look now at what federal agents believe is the largest drug tunnel in history. it runs from a house in tijuana to a lot in san diego. agents discovered this tunnel last week after witnessing some suspicious activity at that lot. the department of justice photos some of the seven tons of marijuana and ton of cocaine from the tunnel that spans 800 yards. eight football fields. it was equipped with a rail system, lights as well as a large elevator. six people now face charges. still ahead on abc 7 news at 4, the changes coming to san jose after a broken fire hide rand created problems during a fire over the weekend. some relief for renters in the south bay. the decision after a long and contentious meeting. plus, the reprieve for alexander hamilton. he'll stay on the 10, but there will be a new face on the 20. at 4:11, a live look at 101 in san rafael. northbound traffic is the oncoming traffic on the left side. a little heavier than we often see. right-hand side is smooth sailing pretty much through golden gate bridge and back into san . >> announcer: santa rosa, berkeley, san jose and all the bay area. this is abc 7 news. harriet tubman is the choice to break the gender barrier. the famed abolitionist will be put on the $20 bill replacing andrew jack sosojackson. no release date on the tub man 20. when it is released, it will be the biggest overhaul since the '20s. alexander hamilton will stay on the $10 bill. coming up at 5, leanne melendez has a look at how that switch came to be. tenants are getting some relief after of a marathon nine-hour meeting that city council voted to slow the rate of rent increases. >> matt keller with the details rnchtsz both sides of the rent control debate were passionate during the san jose city council meeting that didn't end until after 2:00 a.m. >> i want to save to buy a house. it's like a second mortgage just to pay my rent. >> these rent control laws you're bringing to me is like the housing department buying the biggest chain saw and chopping down all my trees i work so hard to improve. >> reporter: the ordinance in place since 1979 is no more, gone is the 8% annual cap. in its place, the city council approved several changes including lowering the annual rent increase cap to 5%, landlords can bank unused increases and pass them along the next year but only up to 8%. the council is also having city staff to develop a rental registry to help with enforcement of the ordinance and an anti-retaliation for tenants. jennifer loving sent me this statement saying, it was exciting to see the community rallying around preserving and increasing affordable housing. but a spokesman from the california spokesman said the council's actions are not a solution to the housing challenges. he said the council should consider the proposal for a billion dollar affordable housing bond. mayor sam liccardo says that's a possibility. >> we're now working with the county to discuss what a countywide housing bond might do, recognizing we might get more resources that way. >> reporter: in may, the council will take up a few more issues related to the rent control ordinance including relocation fees and the possibility of a rent freeze until this ordinance goes into effect later this year. >> housing prices are making the dream of owning a home difficult for america's millennials. a new survey finds 37% of millennial renters have saved nothing at all for a down payment. in larger metro areas, renters younger than 35 that are saving have just an average of $5800, less than a fifth what's needed for the typical 20% down payment on a starter home costing $175,000. governor jerry brown's oakland hills home is going on sale. sky 7 hd was over the sprawling 4,000 plus square foot home along skyline boulevard. brown and his wife bought this home ten years ago. the governor's official residence is in sacramento with the newly renovated governor's mansion. asking price, $2.5 million, listed on friday. if you're looking for a job or know someone who is, we have a great opportunity for you. the abc 7 job journal hire event is from noon to 4:00 tomorrow at the holiday inn civic center in san francisco. hundreds of jobs are available. it's free to attend. experts will also be available to help you with a resume. we have more information on abc 7 news.com. spencer christian's job is the forecast. sunny but a little rain is on the way. >> i'm loving my job today. it's hard to imagine a more beautiful day. and i'm happy about the possibility of some rain. let's down to live doppler 7 hd. we have sunny skies across the area with just a few high clouds around. that picture will change. here's the goad golden gate bridge, 69 degrees in san francisco right now, mid-70s in oakland and mountain view, upper 70s san jose and morgan hill, 64 at half moon bay. this is the view from the east bay hills looking westward. it's 71 in both napa and santa rosa, 75 at novato, fairfield 7776 at concord, 78 at rivermore. one more live view from our mt. tam camera. a chance for spotty sprinkles are likely friday. we expect sunny days this weekend. we rank every storm through this rainy season on our storm impact scale 1 to 5, 1 light and 5 severe. this one ranks 1, a storm of light intensity. let's get down to the forecast animation beginning 12:00 a.m. friday. notice by 5:00 a.m. as the morning commute begins it's going to be a wet morning. that means probably slow and slippery commute for those driving. as there will be a lot of wet pavement at that hour. but the bulk of the rain moves through quickly giving way to widely scattered showers by midday, isolated. it will end by early evening on friday. by 7:00 p.m. friday we project rain totals from 0.04 inches to 0.3 in hayward. nearly 0.3 in oakland just under 0.4 at napa. low temperatures tonight under partly to mostly cloudy skies will be generally in the mid-50s. it will be a pretty mild overnight period. of course there's that chance of some spotty sprinkles so wet spots may greet early morning commuters tomorrow. in the daytime tomorrow, we'll see increasing clouds and the chance of some spotty sprinkles or light isolated showers. highs will be mainly in the low to mid-60s at the coast, upper 60s to low 70s around the bay and upper 60s to low 70s inland as well. here's the accuweather seven-day forecast. after friday's rain, mainly sunny skies on saturday and sunday. it will be breezy on sunday, in fact, a breezy pattern develops sunday, continues through monday. it will be pleasantly mild with high temperatures up around 70, 72 degrees inland and around the bay on sunday and monday. then on tuesday, the winds calm down a bit and it gets milder before our next chance for sprinkles, next wednesday. >> thank you, spencer. we head back out live to golden gate park where we're over the area of hippie hill. it's 420 on 4/20 april 20th. >> we've officially hit that time, the huge crowd has gathered for an unsanctioned holiday to celebrate cannabis, of course. this is the moment they all light up for one giant smokeout. and you can see the crowd is just enormous there in golden gate park. >> they were talking about 15,000. it looks larger than that. this event has grown year after year. last year we covered it and at 4:20 you just saw this giant plume with everybody smoking in unison. in california, medical marijuana use has been legal since 1996. they're talking about an initiative in november that would make recreational use legal. we'll see if that comes to pass next election. >> right. >> of course it's still illegal under federal law. >> right. >> different states have made different sanctions for it. >> i'm guessing not everybody there has a medical marijuana card. >> i'm thinking you might be right. >> the police aren't really checking. it's a mellow crowd as one would expect. they're just letting it go. this is the celebration every year. >> we haven't seen that big plume of smoke, though. >> trust me, it's just a matter of time. we'll keep our eye on that. coming up, the playoffs and playoff fever as the warriors head off to houston ahead of game three of their series tomorrow. tonight on abc 7, the middle at 8:00, gold bergz, modern family and blackish, nashville, abc 7 news at 11. here's a sneak peek of tonight's episode of "nashville." >> what is wrong? did your meeting not go well? >> what meeting? what meeting? no. luke bailed. bailed and i had to watch avery and layla grind on stage during sound check. is there something going on between them? >> not that i know of. >> would you tell me if there was? >> of course. >> you want to tell me what's really bothering you? >> i'm trying to put my life back together. my career, my daughter, my team. everything. and avery is the only missing puzzle piece. i thought we had this moment this morning. we've been getting along so well. we had this spark. then i see him on stage with her. >> it's all right, juliette. maybe it's just not meant to be. >> maybe i just don't deserve him. the warriors have touched down in houston for games three and four of their playoff series against the rockets. >> they departed oakland airport this morning. kristen sze is here with the latest. >> pardon the color of this dress and pardon this nasa pun, but houston you have a problem. the warriors touched down almost two hours ago with this tweet, hello houston. and they mean business. here are other tweets today. looking confident before boarding the flight here, and his fellow center tweeting the simple message, off to houston. you see the little plane there. steve kerr was spotted talking with staffers. a lot of thinking on the staff like will he play or rest steph curry? other players spotted leaving, le and ra barbosa, team's spiritual leader, draymond green with his smile. one of the best six men in the nba, iguodala. it landed safely before 2:30 this afternoon. the rockets are hoping to overcome a 2-0 deficit in the playoff series. but if this one right here, their picture of the players practices including james harden is meant to intimidate, it isn't going to work. after all, as steph curry tweeted, this squad is determined. one man down, next man up. >> i like the next man up to be steph. >> yes. abc 7 news sports anchor mike shumen is in houston to cover games three and four. the live reports begin tomorrow at 4:00 p.m. right here on abc 7 news at 4. you can also follow him on twitter for a behind-the-scenes look for the prep for game three. >> the warriors are going to decide tomorrow morning on whether steph plays or not. they won't wait and make it a game time decision. the best female golfers are in the bay area for a tournament. lake merced golf club, ko is the number one ranked ladies golfer in the world, a favorite to win the swinging skirts lpga classic. >> if i do end up doing it, it will be extra special as the first year i won this event it was my first win as a tour member. so to have that and to know that i've won it three times, it will be even cooler. >> ko won in 2013, her first ctory as a pro. it was so special to her she tattooed the date on her arm. if ko wins this weekend, it will also be memorable because sunday will be ko's 19th birthday. >> wow. >> that's remarkable. she's so good at such a young age. >> 19. wow. abc 7 news at 4 continues. the celebration is short lived for the candidates after a big win for trump and clinton in new york. a look ahead to the next primary. >> also, the michigan officials now facing jail time over the flint water crisis. and a big fine for volkswagen. how much it's going to pay out to c (music plays from one way or another )♪♪ ♪ i'm gonna find y♪ i'm gonna getcha ♪ ♪ getcha getcha getcha ♪ one way or another ♪ ♪ i'm gonna win ya ♪ i'm gonna getcha ♪ ♪ getcha getcha getcha ♪ one way or another ♪ ♪ i'm gonna see ya ♪ (inhales cigarette) >> announcer: live from the kgo broadcast center, this is abc 7 news. thousands of people are in golden gate park right now celebrating 420. an unofficial holiday for marijuana smokers. you can see the crowd from sky 7 hd. it just reached its peak about ten minutes ago. sky 7 hd has been flying overhead, and this is a live look right now. you can still see a little bit of the cloud of smoke as it's now dissipating. police report no major problems so far. harriet tubman will replace andrew jackson as the face of the $20 bill. the treasury department decided today. ahead at 5, leanne will have a look at how it all came to be. there's an outpouring of help today for the ahuna family whose car was burglarized in san francisco. the thief took medical records and medicine belonging to the 13-year-old in the city to undergo brain surgery. this picture was tweeted after police bought the family a new camera and laptop. hear from the ahunas on abc news at 5. in the race for president, the winners of last night's new york primary are on to the next states. there's a new call for one republican to call out of the race. abc news reporter marcie gonzalez has the latest from new york. >> reporter: trump has been busy back out on the trail today, kicking out protesters, going after his rivals, feeling especially confident after his biggest win yet. ♪ new york new york >> reporter: the presidential front-runner celebrating huge victories in their home state. donald trump campaigning in indianapolis. >> so we had a great night last night in new york, the people of new york were amazing. >> reporter: after claiming nearly all of the gop's 95 delegates in new york. on the democrats side, hillary clinton winning the empire state by double digits. she and husband bill in pennsylvania putting their focus on the next primaries. >> i ask you to vote for her because she's got the best record, because she's the most qualified to be commander in chief, and she's the best single change maker i ever met. >> reporter: the win striking a blow to bernie sanders. his seen your adviser tells the associated press the campaign will asoes where they are after next week. sanders vows to stay in the race. >> next week we will be competing in pennsylvania, connecticut, rhode island, maryland, and delaware. and we look forward to winning a number of those states. >> reporter: and despite coming in third behind trump and john kasich in new york, ted cruz insists he's in it for the long haul, too. >> we are definitely headed to cleveland. and in cleveland the people will preva prevail. >> reporter: trump is now calling on cruz to drop out of the race. the front-runner is now the only gop candidate with a chance of clinching the nomination with bound delegates before the convention. we're live in new york, marci gonzalez, abc 7 news. back to you. >> marci, kasich came in second in new york but is still behind. is there any sign of him dropping out? >> reporter: like cruz, kasich says he's counting on a contested convention. and he points to the fact that he was the only one to beat trump in one of the districts here. he actually beat him here in manhattan. as he put it, he crushed cruz elsewhere in new york. so he says if it goes to a contested convention, which he thinks it will, he believes that he will have a shot at getting the nomination. >> thank you so much, marci. hillary clinton will be back in the bay area in may for another fund-raiser event. that news from abc 7 news political analyst and politico reporter. this event is a lot more affordable to attend than the last one. tickets will be as low as $45. this is aimed at attracting young millennial voters, the low dollar ticket a dramatic contrast to her fund raiser last week when george and amal cle y clooney were there. the cost for that per couple was $300,000. president obama is in saudi arabia looking to ease difficulties between allies. he met with the king today. the summit tomorrow will focus on regional stability, iran and the fight against the islamic state. it comes at a time where the white house has called for a more inclusive government and improved rights in the kingdom. the saudis are opposed to president obama's outreach to iran and are skeptical to his approach to syria. the death toll from ecuador's 7.8 earthquake has risen to 553. the u.n.'s humanitarian chief says hundreds remain missing, hundreds of thousands of disaster victims need shelter immediately. he says there's a great need for drinking water in the affected areas. local seismologists have reported more than 400 aftershocks, the strongest a 6.1. alice scandal man and bill friedman of vallejo survived the quake and sent us pictures of the damage. the couple was vacationing in a seaside town of clemente when that quake hit. the european union is broadening its investigation of google. today a top e.u. official accused the tech giant of rigging the app market by making its android operating system give appreciable treatment to its products. more problems for mitsubishi. the japanese carmaker says employees intentionally falsified fuel mileage test data for many models. it affects four mini car models sold only in japan. mitsubishi struggled for years after an auto defect scandal in the early 2000s. this comes as volkswagen reached an agreement today to spend a billion dollars to compensate owners of cars that committeed emission tests. still to come, how the movie "the martian" is leading to big changz at the golden globes. i'm spencer christian. here's the view from mt. tam. mostly sunny skies but clouds are thickening and showers are in the get high speed internet from at&t. with 99.9% reliability for just $30 a month. keep calm, your internet's on. actress jennifer aniston is "people" magazine's most beautiful person in the world. the 47-year-old says she's flattered and humbled by the honor. "people" says she was selected in part because of her wisdom and self-assurance. this is the second time aniston has been named the world's most beautiful woman. the other names are melissa mccarthy, taraji p. henson and robin roberts. a big change is coming to the golden globes thanks to "the martian." the rules are changing after "the martian" won a golden globe in the comedy category this year. matt damon earned him the award. many mover vigoers considered a drama. the new rules specify that dramas with comedic overtones should be entered as dramas. >> there were funny parts but it wasn't a comedy i don't think. new images reveal the bright craters in stunning detail. it shows how loni crater which has a diameter of 21 miles across. the photos reveal evidence of lands slides and a smooth shiny material evidence of a fresh impact. it has an average diameter of 590 miles. small but not insignificant. >> right. >> kind of like the rain we have coming. >> yes. >> good point. i like that. a small amount but not insignificant. here is a look at live doppler 7 hd, no current signs of rain. rain is on the way as we look at the statewide map for tomorrow. notice much of the northern half the state has clouds and showers moving into the bay area tomorrow and friday. southern california will be under mainly sunny and warm conditions tomorrow. here in the bay area as we have increasing clouds tomorrow, look for highs from mid-60s at the coast to low 70s around the bay and inland. let's talk about the temperature trend around the bay area for the week ahead. tomorrow we'll see a high of 72 in san jose, just one degree above average for this time of year. but the high will drop sharply to only 63 on friday and the entire bay area will actually see a rather significant cooldown on friday and temperatures bounce back up to the average level over the weekend. that cooldown will accompany our chance of rain on friday. here is a look at our rain chances for the week ahead. only a 20% chance tomorrow, maybe some spotty sprinkles but a 70% chance of morning showers on friday. it looks like our next slight chance of rain will be wednesday of next week. still ahead on abc 7 news at 4, the new fallout from the flint water crisis. >> so many things went so terribly wrong. >> the charges filed today against officials involved in a toxic water problem in michigan. and a big drop in life expectancy in the those are some good looking tomatoes. yep. how long have you been growing them? for a couple months. me too. hey leonard, if we've been growing our tomatoes the same amount of time, why did your dirt grow more than my dirt? because my dirt's better than your dirt. oh. nature's care organic potting mix produces more tomatoes than those other guys. that's some good dirt. produces more tomatoes than those other guys. from bank of america to buy a new gym bag. before earning 1% cash back everywhere, every time and 2% back at the grocery store. even before he got 3% back on gas. kenny used his bankamericard cash rewards credit card to join the wednesday night league. because he loves to play hoops. not jump through them. that's the excitement of rewarding connections. apply online or at a bank of america near you. >> announcer: santa clara, san francisco, east bay and all the bay area. this is abc 7 news. san jose city leaders tell abc 7 news they are going to take action after fire crews discovered two fire hydrants were broken and found out as they were fighting a fire. >> janet oh is live with the story you'll see only on abc schae7 news. >> reporter: reven after residents made complaints, no one knows why this fire hide rant and another nearby weren't fixed sooner. this townhouse was destroyed by flames and today a city leader says she never want thz to happen again. two fire hydrants didn't work when firefighters arrived last weekend. the fire killed two family pets. now the city's vice mayor is concerned and has plans to make changes to the system. >> when residents call to have it fixed, we need to have the water company who's involved in this, in this case muni water, notify the fire department immediately. >> reporter: municipal water system is in charge of handling complaints for the fire hydrants on sugar creek drive. two was found to be broke be, one with a hole. municipal water says they typically make same-day repairs but they have no record of calls about the hydrants in this neighborhood. >> by knowing that information, we'll allow us to better perform our job rfrnlts the fire department says they don't run into this problem too often, but add the two-way communication will be vital. residents say they're just glad all this talk is leading to real progress. >> it could have been my home. it's my neighbor's home. it's extremely important. >> reporter: herrera will also make a recommendation for municipal and other water companies to keep a record of hydrants they're working on. now to the latest on the water crisis in flint, michigan. three officials are facing jail time. they were criminally charged today following federal and state probes into the city's lead contamination problem. stephanie ramos has the details. >> reporter: the first wave of criminal charges now filed in the flint water crisis. >> so many things went so terribly wrong and tragically wrong in flint. >> reporter: michigan's attorney general announcing three officials are now charged with felonies, including official misconduct and evidence tampering. two state environmental rel aal regulators and a flint water plant supervisor face five years in prison. >> they failed in their responsibilities to protect the health and safety of families of flint. >> reporter: flint's drinking water became contaminated when the city switched to using the flint river as its water source for more than a year. the attorney general alleges these officials knowingly lied about water tests required on certain homes before the transition, leaving nearly 100,000 residents exposed for months to potentially hazardous levels of lead. >> no one is above the law, not on my watch. >> reporter: michigan governor rick snyder believes the water in flint is drinkable again and plans to drink it for a month. >> he wants us all to use the water in the filters again rnchtsz the governor stopping by this home with high lead levels filling up gallons to tap water to take home to drink. investigators say it doesn't end here. for them, it is personal. >> it really hurts when i have friends, personal, close friends, they live here. >> reporter: before the charges were announced, more than 20 senate democrats called for massive new investments in water infrastructure systems because of concerns over lead contamination across the country. stephanie ramos, abc news, washington. >> a plan to defeat the zika virus is in the works in southern california. uc riverside researcherers think the solution to stopping the mosquito borne illness may be the mosquitoes themselves. they're working to creating mosquitoes immune to the virus. researchers say they can also genetically modify mosquito eggs to produce zika-resistant offspring. it would need fda approval. bacteria in your mouth may hold clues to pancreatic cancer. >> p and the life expectancy for white americans has dropped. >> few survive more than five years after the diagnosis of pancreatic cancer. doctors are eager to find a way to diagnose and treat it sooner. a new study suggests the presence of certain mouth bacteria could help identify those who are at higher risk of the disease. there are five previous studies that showed that gum disease, bleeding, swollen gums, missing teeth are associated with an increase in pancreatic cancer. life expectancy declined slightly for white americans in 2014. it's a troubling sign that the stress among younger and middle-age whites are dying at ever highing rates from drug overdoses, lowering the life span as a whole. the new data show in addition to drug overdoses, liver disease and suicide deaths were also happening more often among white americans. well, there is some hope for reversing type 2 diabetes. new research uses a strict liquid diet on 30 people who have lived with type 2 diabetes for up to 23 years. nearly half of those had a remission of the condition that lasted six months after the diet was over. the study brings hope that diet changes can reverse diabetes in some cases. and finally, could a superfood cocktail cure a hangover? yes, according to a new book. t it includes chia seeds, bee pollens and eucalyptus mixed with alcohol meant to offset the negative effects of booze. is it new coke all over again? coca-cola, coke zero, coke life and diet coke, also known as coke light, are all getting makeovers. these are the new looks of the cans here. the beverages will be color-coded now, red for coke, black for zero, silver for light, and green for life. are you getting all this? >> i'm writing it down. >> the word "diet" does not appear on the new can so it can be confusing. this is part of coke's taste the feeling campaign which is the first time the all coke trademark brands have been featured in a single campaign. the rollout begins later this year. i guess we should point out just the packaging is different. they're not changing the flavors. >> right. you just have to read to make sure you're getting the right one. i feel like coke drinkers don't like it when you mess with coke. >> they're usually pretty vocal. abc 7 news at 4 does continue, up next, shot new gadgets from the tech leaders of the future. we'll take you inside stanford's cool expo. and kristen is here with a look at what's coming up at 5. state water agencies make incredible declarations about the drought. that's ahead. plus, the early worm that's catching california experts off guard. what's being done to stop it from killing trees all over the bay area. your laundry. what's really the best way to wash? those stories and more when i join larry for abc 7 news at 5. (musiclays from one way or another )♪♪ ♪ i'm gonna find y♪ i'm gonna getcha ♪ ♪ getcha getcha getcha ♪ one way or another ♪ ♪ i'm gonna win ya ♪ i'm gonna getcha ♪ ♪ getcha getcha getcha ♪ one way or another ♪ ♪ i'm gonna see ya ♪ (inhales cigarette) to be coming up with new technology and today graduate business school students at stanford got to see how artificial intelligence and robotics are making their way into our homes. we see the newest example. >> reporter: called cool expo, it gives students a window to the future and it's closer than you think. dake overdrive, for example. each racing car has a microprocessor inside that knows how to stay on the track. players concentrate on strategies to overtake over others with a smartphone application or against a car operated by artificial intelligence. >> kind of like a board game. families gather around and play together. what's great for the kids is they get to use their favorite device, like their phone and get to interact with the screen. they have video game elements. >> reporter: virtual reality is hot but now they've added hand movement to make it more realistic. a grad student was impressed. >> if you're looking at your hand move, your eye movement goes with it. you're really inside that reality. you're almost -- it's almost real life. >> reporter: we all have to eat. yet we all spend time cooking which if you do it the same meal every day it can get boring. so we think we need to automate that and now is the time. >> reporter: if your pet is bored here is a learning device. hit the right button the reward is food. clever pet is also for cats. >> as you can see, this kind of technology is appealing to human beings as well. which only goes to show you that whatever the creative mind can come up with, there must be an application for it. at stanford, abc 7 news. >> i hope that wasn't a dog treat for that little boy. an oregon-based start-up is now working to harness the power of the ocean. columbia power released this photo of what it called its stingray generator. the company says it floats on the surface and passing waves power an internal magnetic generator. an under water cable transmits of the current to a power grid. not a new idea but it's struggled to find a cost-effective approach. thank you for joining us for access 7 news at 4. abc 7 news at 5 begins right now. it's just an epidemic that's out there. >> car break-ins leave a family devastated until the local police officers association step in with a surprise. >> i can't believe this! a smashed fence marks the latest shooting on an east bay freeway. what we're learning about the man who died. buster posey and his wife try to hit a home run for cancer. this was an emotional announcement. and say good-bye to andrew jack son and hello to harriet tubman, the new face of the $20 bill. >> announcer: live from the kgo-tv broadcast center, this is abc 7 news. can mom have one? >> whichever one you think is going to be the best for you. >> it looks like early christmas after the grinch stole the first one. tonight a family sees a better side of bay area hospitality. good evening, everyone. >> thanks for joining us. we begin with an outpouring of help for a family from hawaii. here for their son's brain tumor surgery, many of their possessions were stolen out of their car as they visited a popular san francisco tourist spot. vic lee is live on the embarcadero with new developments in the story. >> reporter: well, we have gotten so much response to this story here at abc 7 news. so many people wanting to help this family, among them police officers. but first, more good news. four new officers have been assigned to patrol the wharf and the central district at night. this in response to the auto boostings and to prepare for the summer tourist season. >> take whatever you want. >> reporter: the ahuna family was at the offices of the san francisco police officers association. they were given hats, pins and other police souvenirs. >> last night we were made aware of this family from hawaii being victimized. >> reporter: 14-year-old kakia ahuna, his parents and two brothers came to san francisco from their home on kauai. the 14-year-old will have surgery next week to remove a brain tumor. on friday, they played tourist on the wharf near pier 39. thieves broke into their car and took their bags, most important to kakiya's mother the get well cards from family and friends. >> i was really saving to read them to him while he was in the hospital during recovery. and those are the kind of things that can't be replaced. >> reporter: the most expensive items stolen, a laptop and camera. 16-year-old kili kai is a budding photographer. he took this beautiful picture on his camera. the poa offered to replace the stolen items. >> we're very pleased you're

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