to protect america's children. california's climate crisis: >> we're walking on a lake bed right now. we should be under water. >> o'donnell: the drastic measures in a county of 200,000 people to save water, and the app that could help. "eye on america": what one police department is doing to reduce crime and build trust in the community it serves. purple heart recognition: following a cbs news investigation, the army honors 39 soldiers with brain injuries after last year's iranian missile strike. tiger woods returns: his big announcement tonight. and season of giving: the father-and-daughter duo on a mission to help people who lost their homes in california wildfires. >> this is the "cbs evening news" with norah o'donnell, reporting tonight from los angeles >> o'donnell: good evening, and thank you for joining us. we're going to begin with a key vaccination milestone here in the u.s., with new covid cases and hospitalizations spiking across the country again and a highly contagious new variant spreading to more countries, we've learned today that more than 200 million americans are now fully vaccinated against the coronavirus. that's roughly 60% of the population, and the pace of vaccinations is picking up, for both first shots and boosters. demand for the vaccine has been high amid the new surge, and the emergence of the omicron variant. and today, pfizer said early research finds the initial two shots of its vaccine appear to be much less effective against omicron than previous variants, but a booster dose offers significantly more protection. we have new reporting on omicron tonight from south africa. but cbs' nikki battiste is going to lead off our coverage from new york. good evening, nikki. >> reporter: norah, good evening. well, johnson & johnson and moderna tell cbs news tonight they're testing their current vaccine's effectiveness against omicron and pursuing a 3w5069er to target the new variant in case it's needed. aas the omicron variant spreads across the country, pfizer announced today its booster shot offers significant protection. >> the booster shot could be the answer to the challenge that we're facing with the omicron. >> reporter: but only a quarter of eligible americans have had a booster, just as covid hospitalizations jumped nearly 30% in the past month, driven by the delta variant. four states-- michigan, indiana, ohio, and pennsylvania-- are responsible for half of that increase. michigan hit a record number of hospitalizations this week, and in south africa, a much higher number of young children have been in the hospital with the new variant. >> we have just, as you know, rolled out children 5-11, and today suggests we need to plan for also boosting them sooner rather than later. >> reporter: mikael dolsten is pfizer's chief scientific officer. do you think there's any chance we might need a fourth shot at some point because of omicron? >> i think it is very likely that we will need a fourth boost, possibly already this spring, particularly if omicron continues to dominate. >> reporter: the head of the c.d.c. said tonight most u.s. omicron cases are in vaccinated people. nearly all have mild symptoms with cough, congestion, and fatigue. meanwhile, the chief scientific officer of pfizer told me they expect to have a vaccine for children as young as six months by the summer. norah. >> o'donnell: that is some news. nikki battiste, thank you. in south africa, where omicron was first discovered last month, cases have jumped from about 200 per day to about 20,000. cbs' debora patta reports >> reporr: firmly he grf a covid storm driven by omicron, south africa's fourth wave looks nothing like previous ones. six months ago, ward was overflowing with patients. now it's completely different. it's half empty, despite soaring infections across the country. this was the same hospital during the delta-fueled third wave, overwhelmed, desperately short of oxygen, and running up on the of i.c.u. beds. but this time around, says covid doctor fareed abdullah, patients so far have had mild symptoms with very few requiring oxygen. >> we've never seen that before. normally in a covid ward, you would have 80-90-- i would even go as far as saying 95% of patients would be on some form of supplemental oxygenation. >> reporter: south african scientists have released the first results of omicron's potency, finding it significantly reduces vaccine protection, but completely. alex sigal believes will antibodies from vaccines or previous infections will stop the disease from becoming more severe. >> i'm hopeful that because of all the previous immunity, that while other people will be infected, most of the disease is going to be quite mild. >> reporter: although vaccine rates remain low in south africa-- just over 25%-- so many people have been previously infected with qorvgd it's providing high levels will of natural immunity. south africa's ramping up its inoculation drive. health regulators have approved, and the government is considering maxing vaccines : atbora patta, thank you. and we want to turn now to the trifle a former minnesota police officer who said she made a fatal mistake drawing her gun on duante wright, instead of her taser, shooting and killing the unarmed 20-year-old. david schuman of our minneapolis station wcco was in court for the opening statements. >> i killed a boy. those were the defendant's words. >> reporter: prosecutors said former police officer kimberly potter was reckless and culpable for the death of 20-year-old duante wright. potter's body camera captured the moment the routine traffic stop turned deadly. last april, outside of minneapolis, potter and a rookie officer stopped wright after spotting an air freshener illegally hanging from his reared view mirror and expired tags. potter's partner tried to arrest wright for having an outstanding warrant on a misdemeanor gun charge but he resisted and tried to drive away. >> taser! taser! >> reporter: during therupoer tr >> i shoim!o h che orharged h two countsfslaugulle t and she shotim i the c. and ihing wut in her hand. >> reporter: potter's attorneys admit she made a mistake, confusing her glock .9 millimeter for the taser. her attorney sails she was trying to protect an officer when she shawt wright. >> all he has to do is stop and he'd be with us. but he goes. she can't let him leave. because he's going to kill her partner. >> reporter: wright's mother, katy bryant, was on the phone with her son when the incident played out. >> you shot him why? >> reporter: video of her was shown at the scene. she was emotional as she relived that day. >> i wanted to comfort my baby. i wanted to hold him. then i wanted to protect him because that's what mothers do. you protect your children. you make sure that they're safe. >> reporter: this trial is in the same courtroom where former minneapolis police officer derick chauvin was found guilty of murder other george floyd. unlike chauvin, potter is expected to testify on her own behalf. norah. >> o'donnell: david schuman, thank you. instagram's c.e.o. was on capitol hill today, fending off questions from angry senators who say the social media giant isn't doing enough to protect kids. as cbs' kris van cleave reports, lawmakers are demanding change. >> now, i recognize that many in this room have deep reservations about our country. >> reporter: in the senate hot seat, instagram head adam mosseri pushed back that the app can be toxic for teens. >> instagram is addictive. >> respectfully, i don't believe the research suggests that our products are addictive. >> reporter: mosseri's first appearance on capitol hill follow leaked internal documents showing the app proved harmful to young girls, increasing anxiety about body image and even encouraging some teens to contemplate suicide. he said the industry supports verifying age, building age-appropriate experienceand effective parental controls. >> i think we have to reach the point where we realize some real bad stuff is happening, and... you're the new tobacco, whether you like it or not. and you've got to stop selling the tobacco. >> reporter: 15-year-old mason bogard died after apparently attempting a choking challenge he saw online. his mother, joann. >> i think now is the time for congress to pass the legislation so that we can hold them-- big tech accountable for these things that they're letting slide through. they're harming our kids. >> reporter: ahead of the hearing, instagram announced new safety tools that will encourage teens to take a break after prolonged use and will soon roll out its first set of parlseto w. >> for me, this is a case of too little, too late. >> three hours a day. is that a good use of kidss' time? >> i'm a parent, and ultimately, i think it's a parent's-- that a parent knows best what's best for their teen. so the appropriate amount of time should be a decision by a parent about the specific teen. >> reporter: now, one senator told mosseri, he believes when instagram sees kids, the company sees dollar signs, but parents should see stop signs. it's another indication of growing and broad bipartisan support to regulate big tech, particularly when it comes to kids and teens. norah. >> o'donnell: yeah, that's a big story. kris van cleave, thank you. and here in california, the state is suffering through a drought. more than a quarter is experiencing exceptional drought that has some communities will restricting everyday activities, like taking a shower, activities that most of us take for granted. here's cbs' carter evans. >> we're walking on a lake bed right now. we should be under water. and this is where your town's water comes from. does it concern you? >> deeply. >> reporter: stephanie hellman is mayor of fairfax, california, in the heart of marin county, where annual average rainfall is nearly 40 inches, but als facing extreme drought. >> as beautiful as it is, it's frightening. >> reporter: it's forcing drastic measures on all 200,000 county residents, nold cut water usage to just 55 gallons per day, dramatic, considering a 10-minute shower uses about 25 gallons, 40 for a load of laundry, and a single sprinkler head can spray out 15 gallons per minute. you can't use those anymore. >> no. i mean, it's one-third of our water usage. >> reporter: the new restrictions mean no refilling swimming pools or fountains. you can't wash your car in your driveway. and occupant door irrigation is prohibited. >> there's no irrigation at all until june. >> reporter: none? >> none. >> reporter: john ware and his wife, margaret, moved here because of the lush landscape. >> we've got, like, a third of an acre of mature trees and want to lose them. and i don't- >> reporter: so they just installed two 1,000-gallon tanks to store rainwater. you're capturing the water over there and you're pumping it here. >> correct. >> reporter: many homeowners here are finding almost 80% of their drinking water goes to irrigation, laundry, and toilets. >> that's just ridiculous that we're using-- think about it-- fresh water to flush toilets. >> reporter: paul mann installs systems to capture and recycle water for outdoors. it comes with an app that sends an alert when you use too much. >> imagine if everybody did this. we would have true sustainability, despite the crisis that we're in with climate. >> reporter: now, some of the biggest water wasters in marin could face fines of more than $500, and that is on top of their regular bill. and, norah, if there is no significant rain in the next couple of months, those reservoirs could be unusable by summer. >> o'donnell: it's a real emergency. carter evans, thank you. all right, we're going to turn now to one police department's efforts to reduce crime and build trust in the community it serves. in tonight's "eye on america," cbs' nancy chen takes us to the city of racine, wisconsin,s where for some officers,s policing begins at home. >> reporter: growing up in one of racine, wisconsin,'s toughest neighborhood, 17-year-old kamari andrews says his reaction to seeing police was instinctive. >> my impression of law enforcement was to run from them all the time. >> push back from here to hold it on. >> reporter: but that started to change five years ago, when he met officer tim cisler just a few houses down. it was it like the hangout spot to go to after school? >> it was. >> reporter: this is a c.o.p. house, short for community-oriented policing. it's one of six homes manned by a l lone officer whose job is to know anything that's happening in that neighborhood. >> anything that occurs in that neighborhood, they should know about it-- thefts and crimes, spike in theft of vehicles or shootings. >> reporter: the houses are spread across the city, leased by racine police. officers working out of these homes are assigned to three-year posts. >> we're all about helping these kids to be success. >> reporter: police chief maurice robinson. how do you think it's changed the community's approach to policing. >> simply put, they know we are accessible. we're not an occupied army. we were here to help. >> reporter: the houses also serve as neighborhood gathering places, a space for children to come together. >> have a good weekend. >> reporter: and even a place for the salvation army to field the neighborhood. results have been mixed, but police say, crime has fallen nearly 70% in one neighborhood since they moved in. chief, even a few decades ago, this would have been unsafe for us to be outside here. >> it would have been challenging. >> reporter: the program was put to the test during protests last summer after a c.o.p. house was set on fire. residents defended a house officer... officer after someone threw an object at him. >> you better be quiet, because they're respecting us, so you need to respect them! >> reporter: a sign of progress but not complete success. have you met any negative reaction from the community? >> in the time that i've been here, i have not seen that. now, there are people who don't want us to be on the block because there are people who have other intentions that are extra legal that don't want to have us as close to seeing what they're doing as we can be. >> reporter: andrews credits the c.o.p. house, and cisler, for helping keep his life on track. >> before i met officer tim, i was going down the wrong path. i was only, like, 11 yearsed old, breaking windows type things. if it wasn't for meeting officer tim i wouldn't get the reality check i needed. >> reporter: cisleras s come a detective but has stayed in the teen's life. >> i said, "look, man, i didn't run away from you last time. i'm not going to run away from you this time." slide that in there. >> reporter: building a community one house and one block at a time. for "eye on america," nancy chen, cbs news, racine, wisconsin. >> o'donnell: and still ahead, a cbs news investigation prompts the army to honor dozens of troops wounded in an attack. and why tiger woods' son is helping him return to the fairway. lined version he could access anywhere, no download necessary. and kim. she wanted to execute a pre-set trade strategy in seconds. so we gave 'em thinkorswim web. because platforms this innovative, aren't just made for traders - they're made by them. thinkorswim trading. from td ameritrade. there are many reasons for waiting to visit your doctor right now. but if you're experiencing irregular heartbeat, heart racing, chest pain, h, figue but if you're experiencing or light-headedness, don't wait to contact your doctor. because these symptoms could be signs of a serious condition like atrial fibrillation. which could make you about five times more ly your symptoms could mean something serious, so this is no time to wait. talk to a doctor, by phone, online, or in-person. ♪ ♪ cases of anxiety in young adults are rising as experts warn of the effects on well-being caused by the pandemic. ♪ ♪ ♪ ♪ ♪ ♪ ♪ ♪ you don't get much time for yourself. so when you do, make it count with crest pro-health. ♪ ♪ it protects the 8 areas dentists check for a healthier mouth. the #1 toothpaste brand in america. crest. i brought in ensure max protein, with thirty grams of protein. those who tried me felt more energy in just two weeks! 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well, we got some rare access to >> this started with him not paying the rent and deposit that was due the day he moved in. >> announcer: after a bad beginning... >> judge judy: you should've kicked him out. >> correct. >> announcer: a rough existence with a roommate... >> judge judy: you moved out february 22nd, mr. osanitsch. >> correct, your honor. >> judge judy: did you pay february's rent? >> i did. >> judge judy: you have the money? >> no, i don't. >> judge judy: can the judge end her unhappiness? >> he created a lot of damages in the house. >> judge judy: i think this is all nonsense. >> announcer: "judge judy." you are about to enter the courtroom of judge judith sheindlin. olivia jensen is suing her former roommate, john osanitsch, for unpaid rent, damages to their rental home, and a renter's insurance deductible. >> byrd: order! all rise! your honor, this is case number 607 on calendar in the matter of jensen vs. osanitsch. >> judge judy: thank you. >> byrd: you're welcome, judge. parties have been sworn in. you may be seated. folks, have a seat, please. >> judge judy: ms. jensen, did the three of you all move into... is this your other roommate? >> yes, ma'am. >> judge judy: the three of you all moved into your apartment at the same time? >> no, i moved in in may of 2014. john moved in in october of 2014. and emily moved in in june of 2015. >> judge judy: and mr. osanitsch stayed in the apartment until what date? >> he officially moved out on february 29, 2016. >> your honor, actually, i -- i moved out on february 22nd of 2016, a week earlier. >> judge judy: your claim alleges several things -- first, that he owes for some rent, he owes for some property damage. and you claim that when he moved out, he took some of your ski equipment. you want to be compensated for the $500 deductible because you put that in to your insurance. and your insurance paid for the equipment. but there was a $500 deductible. so for all those things. so i'd like you to tell me what took you a year to get to court? >> over the course of the last 18 months, it has been a constant johnny