mike hamlin is a biologist. why is this happening? we are getting mild winters and ice. >> reporter: he says harp seals can't give birth on land, only ice. scientists say they will not have any options left in the gulf of st. lawrence. >> because it won't exist or because it is so poor any animal that has their pups on the ice, the ice would break up and the pups would drown. >> reporter: it is a long way and they will have to fight off predators including polar bears. >> and that is the overnight news for this thursday. for some the news continues and for others, check back later for cbs this morning. you can always follow us online any time at cbsnews.com. >>> it's thursday, march 11th, 2021. this is the "cbs morning news." historic bill. president biden is set to sign the $1.9 trillion covid relief measure as he gets ready for his first primetime address to the nation tonight. >>> the pandemic one year later. how covid-19 rapidly spread across the globe, and the lessons learned from the deadly virus. >>> arrested on the job. a jury

mike: kyle busch, denny hamlin, brad kozlowski, some of the guys to watch. should be great fun.:00 eastern today on big fox with prerace coverage beginning in about a half hour or so. you don't want to miss it. looks like a spectacular day for racing. so it's been quite an action packed hour. we have done a lot on the immigration crisis at our southern border, also the latest on the cuomo crisis, eight women coming forward. we'll see where that goes in the week ahead. also, we expect president biden to do his first news conference thursday, march 25th. that will be must see tv. that is all for us here in washington. fox news sunday with chris wallace is next. i'm mike emanuel. for march madness, go rut against over houston. -- rutgers over houston. thanks for watching. have an awesome sunday. kristin: i'm chris wallace. -- a flood of unaccompanied children arrive at the southern border and get to stay in the u.s. . >> their families made the heart wrenching decision to send them on a journey across mexico to provide them with a better future. chris: the surge overwhelming facili