barbara hope zuckerberg. the leonard and norma klorfine foundation. the peter g.and joan the rosalind p. walter foundation. koo and patricia yuen, committed to bridging cultural differences in our communities. we try to live in the moment, to not miss what's right in front of us. at mutual of america, we believe taking care of tomorrow can help you make the most of today. mutual of america financial group, retirement services and investments. additional support has been provided by: consumer cellular. and by the corporation for public broadcasting, a private corporation funded by the american people. and by contributions to your you.tation from viewers like thank you. you're watching pbs. (slow dramatic music) - it's a place shaped by fire, ice, and time. a sprawling landscape that's about as diverse as it gets. so the road has met the point at where beautiful, lush, green forests meet a big pile of lava. with massive conifer forests, snow-covered peaks, alpine meadows, and caves carved by this region's volcanic past. definitely a funky smell down here, hey, boome

barbara hope zuckerberg. we try to live in the moment, to not miss what's right in front of us. at mutual of america, we believe taking ce of tomorrow can help you make the most of today. mutual of america financial group, retirement services and investments. >> for 25 years, consumer cellular's goal has been to provide wireless service that helps people communicate and connect. we offer a variety of no-contract plans, and our u.s.-based customer service team can help find one that fits you. to learn more, visit www.consumercellular.tv. additional support has been provided by: and by the corporation for public broadcasting, a private corporation funded by the american people. and by contrutions to your pbs station from viewers like you. thank you. >> sreenivasan: good evening, and thank you for joining us. on a tuesday morning, 20 years ago today, the unimaginable unfolded. 19 terrorists, later identified as members of al qaeda, hijacked four commercial flights. they flew two anes into new york city's world trade center twin towers,rashed a third into the pentagon, and then-- th

barbara hope zuckerberg. we try to live in the moment, to not miss what's right in front of us.mutual of america, we believe taking care of tomorrow can help you make the most of today. mutual of america financial group, retirement services and investments. >> for 25 years, consumer cellular has been offering provide wireless serce that helps people communicate and connect. we offer a variety of no-contract plans, and our u.s.-based customer service team can help find one that fits you. to learn more, visit www.consumercellar.tv. additional support has been provided by: and by the corporation for public broadcasting, a private corporation funded by the american people. and by contributions to your pbs station from viewers like you. thank you. >> hill: good evening and thank you for joining us. i'm michael hill, in for hari sreenivasan. a rally in front of the u.s. capitol in washington, d.c., drew only a few hundred protesters today. the event was called justice for j6, a reference to the hdreds of people arrested in the january 6 attack on congress. police in riot gear lined th

barbara hope zuckerberg. we try to live in the moment, to not miss what's right in front of us.mutual of america, we believe taking care of tomorrow can help you make the most of today. mutual of america financial group, retirement services and investments. >> for 25 years, consumer cellular's goal has been to noontract wireless plans, designed to help people do more of what they like. our u.s.-based customer service team can help find a plan that fits you. to learn more, visit www.consumercellular.tv. additional support has been provided by: and by the corporation for public broadcasting, a private corpation funded by the american people. and by contributions to your pbs station from viewers like you. thk you. >> sreenivasan: good evening and thank you for joining us. investigators are on the scene of the deadly amtrak train derailment in montana today. at least three people are confirmed dead, and seven people remain hospitalized after an amtrak train travelling west from chicago to seattle derailed. the accident happened around 4:00 p.m. local time yesterday near the tn of jo

barbara hope zuckerberg. we try to live in the moment, to not miss what's right in front of us.mutual of america, we believe taking care of tomorrow can help you make the most of today. mutual of america financial group, retirement services and investments. >> for 25 years, consumer cellular has been offering no-contract wireless plans designed to help people do more of what they like. our u.s.-based customer service team can help find a plan that fits you. to learn more, visit www.consumercellular.tv. additional support has been provided by: and by the corporaon for public broadcasting, a private corporation funded by the american people. and by contributions to your pbs station from viewers like you. thank you. >> sreenivasan: good eveningnd thank you for joining us. president joe biden's push to mandate covid-19 vaccinations is triggering a new wave of political division as the number of shots given stalls in many parts of the country. one day after the countrmarked the 20th anniversary of the 9/11 terrorist attacks, vaccinations and possible legal challges to mandates have r