tonight, the race is on. >> i am your warrior. i am your justice. >> former president donald trump doubling down on his 2024 election bid and addressing his long-running legal issues. former maryland governor, republican larry hogan, makes up his mind about a potential bid. >> toughest decision of your political career? >> absolutely toughest decision i ever made. also tonight, a new derailment for the second time in a month. a norfolk southern freight train comes off the tracks in ohio, at least 20 containers flipped the rails outside of dayton. >> it was safe, so there was no hazard. and moving out. big states like california and new york are seeing people packing up. >> growth of almost 100%.

>> we'll tell you why. also, chris rock claps back nearly a year after millions around the world watched the infamous slap by will smith at the oscars. rock reacts. >> i'm not a victim, baby! and, later, echos from the past. musical instruments saved and restored, play sounds of survival. >> my grandfather didn't want to see instruments being destroyed, broken, or lost. >> announcer: this is the cbs weekend news from new york with jericka duncan. >> good evening and thanks for joining us on this sunday. the race for the white house is on. former president donald trump took a victory lap after winning more than 60% of a straw poll vote at the conservative political action conference in maryland. some of his potentially biggest challengers were no-shows at the event as the republican primary field is starting to take shape.

for the democrats, president biden has yet to face any real competition from within his own party. but today on "in anface the nat joe manchin left the door open for challengers. >> are you going to endorse joe biden if he runs for re-election? >> no. the bottom line is let's see who's involved. let's wait until we see who all the players are. let's just wait until it all comes out. >> mr. biden, who still has not officially announced his re-election campaign visited selma, alabama, today, making his case for stronger voting rights. we start off from washington tonight. >> reporter: good evening, jericka. president biden visited selma, alabama, to mark the 58th anniversary of bloody sunday. while there he called for legislation that would strengthen voting rights as we await an announcement on his potential re-election. ♪ everywhere i go ♪

>> reporter: in a hiss rick visit, president biden walked ross the edmund pettus bridge from voters fig. >> the right to vote, to have your vote counted is the threshold of democracy. >> reporter: the visit comes as he looks to reassure a key voting bloc ahead of a potential 2024 campaign announcement. on saturday, former president donald trump headlined the annual cpac gathering of conservatives. >> we will evict joe biden from the white house. [ cheers and applause ] and we will liberate america from these villains and scoundrels once and for all. >> reporter: the former president saying he would stay in the race even if he were to be indicted in some of the investigations he faces. at least three major gop candidates have jumped into the race so far, with several including florida governor ron desantis yet to officially make

an announcement. but fearing a crowded field could help trump, larry hogan told "face the nation" he has decided running against the republican nomination. >> do you think by sitting out it feels a little tighter? >> i hope so. >> it's harder for trump to get that nomination? >> i sure hope so. >> reporter: while some candidates jump out, others are jumping in like author marianne williamson who announced a long-shot bid to challenge biden from a democratic nomination. >> reporter: tomorrow president biden will speak at an event hosted by the international firefighters association. that event could be seen as an indicator for his 2024 intentions because he spoke at the same event before announcing his bid in 2019. jericka? >> all right, willie, thank you from washington tonight. another norfolk southern train derailed in ohio this weekend. it's been just one month since a separate train operated by the transportation company crashed and spilled hazardous material

in a rural area. we have the latest on this new investigation. good evening. >> reporter: good evening. and this is the company's second train derailment in just the last month. we can tell you the previous one happened in east palestine, ohio. what we saw there was toxic chemicals dumped into the water and soil. these recent incidents now prompting public and political scrutiny when it comes to rail safety across the country. this is the moment 20 cars peeled off the track near springfield, ohio. residents nearby were asked to briefly shelter in place. today local officials say there is no public risk. >> the epa made the determination that it was safe, so there is no hazard to both groundwate oai >> reporter: saturday's accident follows a string of recent derailments across the country, including this fiery explosion

in east palestine, ohio. one month later, residents say they are still physically suffering, even though the epa's testing shows the air and water are safe. it is the late st dramatic incident on the tracks that has the authorities and public concerned. >> it feels like we're talking more about train derailments recently. are we seeing a spike in incidents? >> we are not. if you go back for the last five or six years, you see we're at a constant rate. >> reporter: and according to federal data, rail remains the safest way to move hazardous materials. but after the east palestine disaster, ohio senator sherrod brown would like to see rail safety standards improve. >> it's clear that their greed and incompetence always takes precedent over making their workers safe and making communities safe that they go through. >> reporter: last week, brown and a bipartisan group of

senators proposed new safety legislation for trains carrying hazardous materials. and state and federal officials now say cleanup in east palestine, ohio, will take roughly two months, jericka. what we're seeing crews do there is remove all the contaminated soil. then they will have to relay the track work there. we're also expected to learn a bit more about exactly what went wrong in east palestine later on this week. coming up on thursday, we will finally get to hear from the ceo of norfolk southern at a summit committee hearing on thursday. back to you. >> a lot to cover there. thank you. rescue efforts are underway right now in southern california. some residents there remain trapped in their homes after a week of heavy snowfall. crews across san bernardino county are working to plow through snow piles and get supplies to people stranded in mountain communities. in northern california, dangerous road conditions and

extreme winds forced three ski resorts to just shut down in lake tahoe today. more than 30 inches fell near uc berkeley as the region braces for yet another chilly week. well, to greece now where another day of fiery protests continue. thousands called for accountability and improved safety standards following a train wreck that killed 57 people last week. a demonstration in athens turned violent when a group hurled molotov cocktails at police. officials there responded, saying that using teargas, rather, and stun grenades. the station master working through the collision remains in custody. in tel aviv, it was the ninth weekend of protests against plans to overhaul the legal system. police clashed with demonstrators who opposed israeli prime minister's benjamin netanyahu's plan to

limit the supreme court's power. critics worry the proposed scla legislation could endanger civil liberty. half a million people left california during the covid pandemic. what is the reason behind the mass exodus? >> reporter: good evening, jericka. believe it or not, as you mentioned, folks are packing up, they are leaving, saying good-bye to cities like here in los angeles, new york, and chicago. and the main reason why is money. californians are loading up and moving out. as the appeal of the golden state seems to be tarnishing, at least for some. >> it's just not sustainable in terms of cost of living. >> reporter: preston lee is leaving los angeles for austin, texas. >> it's incomparable. the house that we bought was 700,000 for four bedrooms, 4 1/2

bathroom, 4,000 square feet. you can't get an apartment for that here. >> reporter: more people are exiting california than any other state. new york is second. many of those leaving are now calling florida and texas home. this person owns a moving company. how much more business have you seen? >> i would say there was a growth of almost 100%. so our job was like almost double itself. >> reporter: as for why they're saying good-bye, experts say it's a combination of high housing costs, schools, the ability to work remotely, and taxes. >> i always say that you need to make celebrity money in order to live here comfortably. >> reporter: now, california is still attracting people, new people. the issue is they're moving here as renters and then leaving when they decide to buy. >> not surprised that money is

the issue here. well, chris rock is o.itas actor will smith slapped rock at the oscars after rock made a joke about smith's wife jada pinkett smith. spoiler alert, in his new standup special, rock blames the couple reported marital issues for triggering smith's reaction. >> everybody that really knows, knows i had nothing to do with that [ bleep ]. i didn't have any entanglements. [ applause ] she hurt him way more than he hurt me. >> the smiths have not publicly commented on the standup special. straight ahead on the cbs weekend news, the elevated training helping some flight attendants deal with new demands in obstacles. plus, people travel from around the world to this lake of wonders for a spectacular swim with gejellyfish. once-daily pill for moderate-to-severe

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approaches prepandemic levels, and those who are hired can expect special training to deal with the heightened pressures of the job. >> reporter: it's preparation they'll likely never have to use. but this is part of the rigorous schooling all future united flight attendants go through at the airline's newly opened 56,000 square foot training center in houston. it's six weeks of instruction, drills and testing. the airline aims to hire 4,000 flight attendants this year. the training reinforced as often as once a year. >> this is our training room. >> reporter: this is united vice president of in-flight services. >> you have a lot of positions to fill. >> yes. >> how tough is that? >> it's evident by mtet.

>> reporter: the pandemic saw thousands of flight attendants who either quit, or furloughed or took a buyout. and then airlines were short-staffed and all are now hiring. what was your last line of work? >> i was a firefighter. >> do you think this will be less stressful? >> not at all. >> reporter: a model of a plane's fuselage in the new aquatic snefrp has trainees practicing for water landing. and there is the everyday duties of food and beverage service. it's not just service and safety. a big part of training focuses on de-escalation techniques. teams run through potential scenarios. >> why are we on a delay? i don't understand. >> i apologize. i sincerely apologize. >> reporter: the median pay for flight attendants nationwide is just under $62,000 a year. new-hires earn less. but attracted to the perks of travel, trainees like kylie taking the plunge. how does that compare to fire-fighting?

repr:raing as a rush fongin challenges of ensuring safety in the skies. janet shamlian, cbs news,head o weekend news, we'll take you to a tiny island with millions of unique underwater attractions. ruthann and i like to hike. we eat healthy. we exercise. i noticed i wasn't as sharp as i used to be. my wife introduced me to prevagen and so i said "yeah, i'll try it out." i noticed that i felt sharper, i felt like i was able to respond to things quicker. and i thought, yeah, it works for me. prevagen. at stores everywhere without a prescription. people remember ads with a catchy song. so to help you remember that liberty mutual customizes your home insurance, here's a little number you'll never forget. ♪ customize and save. ♪ only pay for what you need. ♪ liberty. liberty. liberty. liberty. ♪

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destination. we go swimming with jellyfish. >> reporter: there's a story to be told of a place hidden in the rock islands of the pacific nation of palau. ♪ about lakes that harbor sea creatures locked in isolation since the last ice age. hi, so nice to meet you. i'm lee. this marine researcher studies those lakes for a living. this is her office. there are more than 50 marine lakes all throughout palau. but out of all those incredibly unique lakes, there's actually only one you can visit. here it is. oh, wow. surrounded by mangrove trees, we were warned it's home to more than a few saltwater crocodiles. but those weren't what we came to see. ♪

these were, millions of graceful gelatinous globs. some golden, some as translucent as a moon beam, found nowhere else in the world. welcome to palau's jellyfish lake. ♪ why here in this lake? >> way back maybe 10, 20,000 years ago they got trapped in here. through time they got trapped to evolve in this environment. >> reporter: they get their energy like plants do, from the sun. they migrate with it. >> it's only in this lake that they migrate. and why only in this lake? i don't know. >> reporter: in 2000, scientists estimated there were more than 30 million jellies just in this one lake. as thick as cauliflower soup. the lake now averages about 5 to 7 million. is this the start of a rainy season here in palau. but we're going to get wet anyway.

>> reporter: my producer didn't preally mean to follow me in. he led the way, camera and all. [ laughter ] no harm done. we're in the middle of a lake in the middle of palau. there's crocodiles over there, there's crocodiles there. there's jellyfish somewhere down there. >> reporter: the inhabitants of jellyfish, lake, we're told benign. their sting would cause no more than mild discomfort if we felt it at all. and it's impossible down here to maintain any personal space. they're everywhere. but any fear is soon replaced with an unexpected calm. it's the most relaxing feeling ever. >> reporter: we had this lake almost to ourselves, except for aaron, who is came all the way from nashville for the

experience. >> i would normally be scared, but nothing -- i mean, they don't sting me. i just touch them. [ laughter ] >> reporter: after about 45 feet, the lake turns into a layer of pink bacteria. and then below that is a poisonous lake of dissolved hydrogen sulfide gas. >> it could kill you, yeah. >> reporter: it is a very primal place. you come away with a feeling that, sure, these jellies may not have a brain, but they may actually be smarter than we think. after all, they live a life far more orderly and far more peaceful than ours. ♪ cbs news, in jellyfish lake. >> just glad to see those crocodiles stayed away. next on the cbs weekend news, strings of hope and history. ♪ ew chapter, its' innovation, organic ingredients, and fermentation.

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>> we are repairing and restoring all these instruments because we think it's impor for people to hear the sound of what those people heard during the war. >> reporter: for weinstein, it's personal. his grandparents lost nearly their entire family in the holocaust. still, his grandfather, a violin repairman in israel, started to save what no one wanted, german-made instruments. why did he take them in? >> because my grandfather didn't want to see the instruments being broken, destroyed, or lost. ♪ >> reporter: through their program, violins of hope, the instruments are played all over the world, reclaiming them from their dark past. some musicians at concentration camps were forced to play as their fellow jews were sent to their deaths. on this night, a restored violin sang once again with the louisiana philharmonic

orchestra. this violinist lost family during the holocaust. >> what a great way for future generations in terms of education, in terms of never repeating something like this again. ♪ >> reporter: here, the past merges with the present. >> so, in this way, some of these victims live on. >> their name lives on, their story lives on. and hopefully the message of don't forget that we are all human being still resonates somehow. ♪ >> reporter: cbs news, new orleans. >> and that is the cbs weekend news for this sunday. coming up tonight on "60 minutes," how artificial intelligence-powered chatbots watchingcann new

greatight from cbsn bay area , this is the evening edition. a woman killed by a falling tree in cupertino. we will hear from people who tried their best to save her. >> it is hard to imagine what happened. >> in the first alert forecast, we are just about to see a good example of these on-again off-again showers one is just about to come into the peninsula. we are going to track that and look at the rainy scenario this week why stanford researchers leading a trial say it works because it doesn't target the virus. live from the cbs studios in san francisco. we began with a tragedy on

a popular hiking trail. a mother killed by a tree. she was killed while hiking with her son and his boy scout group. >> we interviewed a witness who tried to save the woman. >> the corner's office just about three hours ago removed the body. witnesses say a large tree fell on the woman about 3 1/2 miles into a trail back that way away from here. we are told she was hiking with her son and other members of a sunnyvale boy scout troop. family, friends and neighbors came to the parking lot to support the victim's has been. he was in shock. witnesses say the tree fell on the woman around 10:00 this morning. they say three adults and four boys were hiking on a trail commonly known