. >> pbs newshour weekend is made possible by: chue and edgar wachenheim iii. thyl and philip milstein family. barbara hope zuckerberg. charles rosenblum. we try to live in the ment, to not miss what's right front of us. at mutual of america, we believe taking care of tomorrow

. >> pbs newshour weekend is made possible by: chue and edgar wachenheim iii. thyl and philip milstein family. barbara hope zuckerberg. charles rosenblum. we try to live in the ment, to not miss what's right front of us. at mutual of america, we believe taking care of tomorrow n help you make the most of today. mutual of america financial group, retirement services and investments. o >> when it comes wireless, consumer cellular gives its customers thehoice. our no-contact plans give you as much or as little talk, text and data as you want. and our u.s.-based customer service team is on-hand to help. www.consumercellular.tv. additional support has been provided by: and by the corporation f public broadcasting, a private corporation funded by the american ped ople. contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening and thanks for joining us.wi one day to go before the the iowa caucuse democratice, candidates are racing across the state making

sue and edgar wachenheim iii. the cheryl and philip milstein family. rosalind p. walter. barbara hope zuckerberg. charles rosenblum. we try to live in the moment, to not miss what's right in ont of us. at mutuaof america, we rolieve taking care of tom can help you make the most ofto day. mutual of america financial group, retirement services and investments. ss when it comes to wirele consumer cellular gives its customers the choice. our no-contract plans give you as much-- or as little-- talk, text and data as you want, a r u.s.-based customer service team is on hand to help. consumercellular.tto additional support has beened provy: and by the corporation for public broadcasting, a privateu corporatioed by the american people. and by contributions to your pbs station from vwers like you. thank you. u're watching pbs. announcer: explore new w worlds and new ideas through programs like this, made availab for everyone through contribution to your pbs station from viewers like you. thank you. ♪ ♪ ♪

sue and edgar wachenheim iii. the cheryl and philip milstein family. rosalind p. walter. barbara hope zuckerberg.ch les rosenblum. 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. ee additional support has provided by: and by the corporation for public broadcasting, a private corporation funded by the american people. and by contribions to your pbs station from viewers like you. thank you. yore watching pbs. this program was made posstrle in part by conutions to your pbs station from viewers like you. thank you. - you know, the fundamental of the ide that the adult brain is set in stone is the common saying that you can't teach an old dog new tricks. bufact, you can. the adult brain, again, at the ripe old age, in their 40s, 50s, 60s, even beyond, can change its structure and function in a significant way. - everyone i know who's getting older and forgets things makes jokes about having senior moments.

sue and edgar wachenheim iii. the cheryl and philip milstein family. rosalind p. walter. barbara hope zuckerberg. charles rosenblum. 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 mutual of america financial group, retirement services and investments. >> when it comes tless, consumer cellular gives its customers the choice. and our u.s.-based customer service team is on-hand to help. to learn more, go to www.consumercellular.t additional support has been provided by: oand by the corporaor public broadcasting, a private corporation funded by the american people. and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln centern new york, hari sreenivasan. >> sreenivasan: good evening and thanks for joining us. the senate impeachme trial of president donald trump is nearing its end. >> the motion is not agreed to. >> sreenivasan: a narrow 51-49 vote against calling witnees or adding new documents yesterday set

sue and edgar wachenheim iii. thcheryl and philip milstein family. rosalind p. walter. barbara hope zuckerberg. enblum.s ros 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 ma most of today. enutual of america nancial group, retirservices and radditional supas been provided by: and by the cooration for public broadcasting, a private corporation funded by the american people. and by contributyoions to ur pbs station from viewers like you. thank you. you're wa e childrignazio: wgi were child, gi were childrdr wgi were child, gi were chl, gi were childrl, wgi were child, gi were childrl, gi were childrl, wgi were child, gi were childrl, gitronger thanl, wgi were child,

. >> pbs wshour weekend is made possible by: bernard and irene schwart sue and edgar wachenheim iii. the cheryl and philip milstein family. rosalind p. walter. barbara hope zuckerberg. charles rosenblum. we try to live in ntthe mome to not miss what's right in front of us. at mutual of america, we believe taking care of tomorrow can help y make the most of today. tgroup, retiremrvices andial investments. additional support has been provided by: and by the corporation for public broadcasting, a private rporation funded by the american people. and by contributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center inew york, hari sreenivasan. >> sreenivasan: good evening, and thanks for joining us. most of the democratic prsidential candidates are back on the road today, crisscrossing new hampshire after a debate last n seven of the 11 candidates still in the race took the stage for two a a half hours, turning up the heat on each other with a focus on the frontrunners from the iowa caucuses-- senator bernie sanders and former south bend,