. >> scientists in greenland getting excited about a rock they say could be a key component in stopping climate change. >>> students rising above advisers and scholars work closely together. we are meet ever wonder how san francisco became the greenest big city in america? just ask the employee owners of recology. we built the recycling system from the ground up, helping san francisco become the first city in the country to have a universal recycling and composting program for residents and businesses. but it all starts with you. s ep maka differen toge. >>> welcome back. a live look at wall street on this friday afternoon, dow is up more than 360 points. president biden and former president obama joining forces for the environment. obama's team says he will travel next month for a un summit. he's expected to talk about progress in the last years and highlight leadership of young people. he along with 13 cabinet members and senior officials will be in attendance. >>> miners and investors in greenland excited about rocks they found similar to prop back from apollo missions to the moon. w

in greenland, scientists blasted open a mountain filled with what they call climate-saving rocks. >> the chemistry here is unique. it's in the formation of our world. >> reporter: it's called a northosite. it contains only three minerals. calcium, silica and aluminum. they are crushing it for other items. experts say it produces less waste and greenhouse gas emissions. it is found all around the island's rugged terrain in turquoise fjords. but that's not the only place. >> you find it in canada, scandinavia, russia, south africa, lots of places. >> reporter: so far, miners have collected more than 300 tons. even nasa is looking to see if what they learn down here could help them someday mine similar rocks on the moon. ian lee, cbs news. >>> and that's the overnight news for this monday. for some of you the news continues. for others, check back for cbs mornings. and follow us online any time at cbsnews.com. reporting from the broadcast center in new york city, i'm nikki battiste. >>> this is cbs news flash. i'm elise preston in new york. jury selection in the shooting death of ahmaud