and following weeks after collective weeks of mourning and trauma. >> there is tension. >> with no americans held by hamas released pressure mounts on president biden. >> i'm in nantucket where president biden is closely tracking developments with his national security team, what he's doing to secure the release of americans being held by hamas! plus, travel crush, millions of americans head home after thanksgiving, the busiest day at airport still to come with weather threatening some travel plans. > tis the season, the hold shopping season begins in the lines and at the mall. >> reporter: and their buying power this year. >> tree supply. is there reason to worry. >> reporter: i'm michael jordan in new york, how drought are impacting christmas trees this holiday and why you may want to buy early. >> later, a graduation first, a top 10 university awards degrees to inmates learning in lock-up. >> i asked your mama, how did i do? this is the cbs weekend news from washington with adriana diaz. >> good evening, adriana is off. i'm robert acosta. tonight, the second group of hostages s hamas has been freed but not before the second release was delayed by worries. they were taken by gaza across the border to egypt. in exchange, dozens of palestinian prisoners were expected to be freed. today, more aid flowed into gaza as part of the truce agreement but far short what's been called for in the war ravaged palestinian territory. n thousands rallied to keep pressure on benjamin netanyahu to release all the hostages. here to lead us off. >> robert, good evening, the hostages are now back in israel and we finally know who they are, mothers with children and two 3 year-olds and others whose mother was murdered and one who attended the nova music festival and others and a teen also abducted has not been released. tonight, a delayed release of 13 more israeli women and children and four foreign nationals held by hamas in exchange for 39 palestinians imprisoned in israeli jails in an intend standoff and cease-fire cut short. the images of the first 24 hostages being released and the emotional family reunions like that of this 9-year-old racing to his father's arms on the first day of the temporary truce spread some joy and a cautious dose of hope. 4-year-old roz asher told her father she dreamt of coming home. her dad told her her dream had col true. in the israeli occupied west bank, parents of children and young women released from israeli prisons held them in relief and disbelief. in war ravaged gaza where at least 13,000 have been killed according to the hamas run health ministry and the vast majority, 1.7 million displaced, the pause in fighting allowed in hundreds of aid trucks and fuel that was slow to trick am to gazans who waited in endless lines. on day two the fragile truce was in trouble for long hours, hamas halted the release for the second group of hostages accusing israel of not fulfilling the terms of the deal by preventing the agreed number of aid trucks from reaching northern gaza. jessie snyder whose cousin, sherry, is still held with her children, 4-year-old ariel and the youngest of all known hostages he fears he's been holding his breath since october 7th and once again today. >> they're playing a disgusting psychological game. i don't know if my family will come back sunday or monday but i know there are only 50 and will be more relaxed. >> reporter: during those tense hours officials were instrumental mediators to keeping this truth. this is a temporary pause of fighting that could go beyond the four days but so far the two sides have made it clear this is not the end of the war. >> in tel aviv, thanks. tonight, the white house says president biden was among those putting pressure on hamas to act and end the hostage holdup. cbs is in nantucket where the president spent thanksgiving. good evening. >> reporter: robert, good evening to you president biden was in constant communication throughout the day with his national security team and he was working the phones to make sure the hostage deal would move forward. tonight, still no answers exactly when the americans being held by hamas could be released. on nantucket island, president biden expressed optimism more hostages being held by hamas would soon be released. >> hopefully you will see something soon. >> reporter: the president is playing what the white house calls a central role in the agreement when hamas halted for several hours today the president was on the phone with qatar leaders about how to resolve the holdup. they are negotiating directly with hamas which the u.s. does not group since it is a terrorist group. a u.s. official tells cbs news hamas wanted to increase the amount and pace of humanitarian aid flowing into gaza. >> we put in place mechanisms to prevent hamas from diverting these supplies and we're continuing that effort, to make sure aid gets to the people who need it. >> reporter: as other administration officials worked with israel, qatar and egypt to settle the ddispute, national security advisor, jake sullivan, even though they're back on track, hamas has yet to free any americans. >> we don't know when it will occur but expect it to occur. >> reporter: up to ten americans are unaccounted for and expect fod be in the deal. 4-year-old abigail, whose parents were killed by hamas but it is unlikely they will be part of the second wave of hostages released. president biden will wrap up his thanksgiving holiday in nantucket and head back to washington tomorrow. on tuesday he plans to attend the funeral service for former first lady, rosalyn carter, in georgia. robert. >> thank you. today, even with a pause in fighting, pro palestinian demonstrators were once again out enforce. tens of thousands marched in london demanding a permanent cease-fire in the gaza strip. police made only a handful of arrests. the war in ukraine, aerial assault by russian drones, the largest since the war began. the sirens were in the capital. all but one of the drones were intercepted and destroyed. five people were wounded including an 11-year-old girl. former minneapolis police officer derek chauvin has reportedly been stabbed in an arizona prison. citing an anonymous source says it happened in tucson where he is serving 20 years for murdering george floyd. he was quote a target of violence. tonight, millions of americans are on the move, heading home after thanksgiving. if you're winging it, prepare for lines. sunday could be the busiest day ever at the nation's airport, projecting a whopping 2.9 million people will pass-through checkpoints. on the road, a big storm could complicate the trip. this is kansas where snow plows this weekend are keeping highways open and travelers rolling. let's bring in meteorologist paul goodloe from our partners at the weather channel. >> sunday is a huge travel day. it's a gorgeous day whether you're just traveling or enjoying a quiet sunday. no wet or snowy weather anywhere across the region. the snow that was here is now moving across the planes in the midwest. this is our problem area, flying east midwest, lots of problems, the cold air and snow sticking around, snow below freezing and that system going northeast, if you're traveling late sunday to monday, expect windy weather and snow to slow you down in this region. now to the holiday buying blitz, gone are the brawling crowds and instead, lots are buying on line. they are projected to spend 10 billion dollars, and joining us where we found shoppers looking for deals and fun. >> reporter: good evening, robert, the holiday spending spirit is putting a dent in wallets across the country. some are taking part in small business saturday boosting local stores. many are returning to traditions past, flocking to malls. >> good morning, guys! >> reporter: malls parking lots across the country are packed this weekend with thanksgiving shoppers stuffing shopping bags and taking advantage of sales. >> we're having a mom and girls shopping day today. we're having fun. >> reporter: but instead of crowds chasing deals as in years past the experience is more social for these shoppers with some 37% preferring to brows and buy in person. many of those want to get back into stores to check out products and to avoid shipping costs. >> reporter: why did you choose to shop in person this year? >> i did look online. it's funner to be out in the crowd. i think we like to be in the hustle. >> reporter: while inflation and credit card debt and higher interest rates are eating many holiday budgets, shoppers plan to spend $16,000 more this year with eight gifts instead of nine. >> are you spending more this year opposed to last year? >> we're expecting to spend at least the same but really just watching for the deals that they're having. >> reporter: while in-person shopping is seeing a major jump, cyber monday sales are still expected to hit a record high with many making purchases on their phones. robert. >> thanks. straight had on the cbs weekend news, how drought could dry up your plans for a christmas tree. then, how this device is a big breakthrough for artificial intelligence. later incarcerated students make history earning their bachelor degrees. many families are hauling out the holly this weekend but devastating drought may impact the selection of real christmas trees, as cbs's michael george explains, climate change is amplifying this tree trouble. >> you think we can find one that big out there? >> reporter: searching for the perfect christmas tree is an annual tradition for families like the allens in oklahoma. >> they give you a little saw to saw down and you walk out there as a family and regime kind of take over. >> reporter: for some growers it's not as cheerful or profitable a holiday. a year of drought damaged fur and spruce trees especially in the south. >> this is probably the worst spring droughts and they are the worst for tree groers. >> it's been a difficult year. >> reporter: michael says climate change is making the problem worse. >> there have always been drought and floods and drought are becoming more severe and lasting a little bit longer. >> reporter: that means saplings are dying off and more mature trees are stunt. >> we lost some of the 20 foot tall trees that needs so much water. >> reporter: the christmas industry says there should be plenty of trees for sale this season. it takes about seven years for a tree to grow. this year's severe weather already hurt supplies for the future. if you're in the market for a real tree this season, jill side bottom with the national christmas tree association has some advice. >> we recommend if you have a certain type of tree or size of tree you want you shop early. >> reporter: be flexible about that highest bough, michael george, cbs news, new york. still ahead on cbs weekend news, we head to chicago and a major leap forward for artificial intelligence. this week the abrupt fire and later re-hiring op sam altman grabbed headlines and also raised questions about who's in charge of this new artificial intelligence technology as cbs's charlie shows us, ai has made breakthroughs of its own. >> reporter: at first glance it may look like a small toy or gadget. but sam creedman, a north western university professor sees the future. >> the goal of this robot is incredibly simple. it's just to make the robot move forward. >> reporter: what does that show you? >> movement is fundamental to intelligence. why animals have brains and plants do not. >> the wiggling chunk of purple silicone is the product of a simple command to a computer, make a robot that can move across a flat surface building on decades of research into artificial intelligence, it only took the program seconds to design the series of connections to make it move when air is pumped in. >> basically, it's sketching out the shape of the molds. >> reporter: they say this is the first time ai has built a robot. what it can do isn't the main point, it's what it could mean. >> reporter: you refer to this as instant evolutin. what do you mean by that? >> it will provide a window. now, we can watch evolution unfold before our eyes. >> reporter: for all that promise, a leading voice on artificial intelligence says right now, ai is about as developed and understood as a temperamental teenager. >> there are very few checks and balances right now. it throws its weight around and doesn't have firm values yet. that's a problem. >> reporter: giving ai these challenges is optimistic. >> my greatest fear is democracy falls because there is so much information and we never get to my greatest hope. >> reporter: creedman says he hopes like his robot ai learns to walk first and then it can run. >> this ai tool and others like it will help us speed design and come up with completely new ideas. >> reporter: cbs news, evanston, illinois. next, on the cbs weekend news, something for the mtv generation, as a holiday favorite marks and anniversary. a bit of time travel now. it was on this day in 1984, the song, "do they know it's christmas" by band-aid was recorded in london, a fund-raiser for even yoepian famine relief. it sold a million copies in the first week becoming the fastest selling single in british history. now to a holiday tradition on rail, the kansas city train rolled through south bend, indiana early saturday, headed to illinois. it makes stops across north america helping raise money for local food banks. >> a very different kind of light show was on display in italy. mt. etna is erupting again, sending hot lava down its snow covered slopes. it is europe's most active volcano and the continent's tallest. when we return, graduation day for an unlikely group of students. finally tonight, nearly 2 million people are currently incarcerated in the united states but there are only 406 higher education programs available to them. in tonight's weekend journal, cbs brings us a first of its kind, inmate graduation. ♪ >> reporter: graduation day reminds us that education opens doors. even on a campus closed off to the outside world. >> it means everything, because i'm not supposed to be here. >> reporter: william peoples is serving a life sentence for murder in crest hill. >> unfortunately for a crime i didn't commit so i want to put that out there. >> reporter: he's been working towards a college degree. >> this moment is the culmination of literally 30 years of people pouring into me. >> reporter: peoples is part of a cohort of students with the north western university prison education program. >> five years ago i could not have imagined me standing here at this moment. >> reporter: a group of 16 will be the first to earn a bachelor's degree from a top ten university. >> we know you're history makers, that's right. >> reporter: 16 inmates proving walls are no barrier to education. >> 16 years ago they were in rival gangs and here they are swapping poetry with each other. >> reporter: she founded the program to open doors and minds. >> all hail you, miss lackey. >> thank you, thank you, thank you. >> reporter: who can express nothing but gratitude. >> thank you for seeing me and for acknowledging me and for teaching me. >> everything you ever wanted from me was to be the best version of myself. i ask you, mama, how did di? >> i don't think any of the faculty members sitting on that stage had ever been to a commencement like this. >> reporter: even those serving a life sentence. >> william peoples. >> reporter: find a meaningful degree of freedom. noel brennan, cbs news, chicago. that's the weekend news for this saturday. first thing tomorrow, jane paulie, followed by "face the nation" and guests include qatar prime minister and national security advisor, jake sullivan. from washington, good night. xxx x from cbs news bay area this is the evening edition. >> 17 israeli hostages and 39 palestinian detainees have been released. we have the latest on the cease-fire and the call for humanitarian aid. a berkeley business with high show -- hopes that shoppers will be headed back as stores are dealing with robberies and crimes. >> you cannot let that bother you. then they win. >> the high tech effort to save a symbol of san francisco. how engineers plan to raise the ferry building by seven feet. live from the studios in san francisco. it is the second day of a four-day cease-fire in gaza was 17 more hostages released along with 39 palestinians. the is really and four nationals from thailand were taken from hamas on october 7, they are now taken to the hospital where they will be reunited with their families. palestinians held and never least are all women and children. some of whom had been detained for months with no charges and no