and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by 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. president obama has vetoed legislation intended to slow his policies on climate change. the bill would have nullified an environmental protection agency rule requiring power plants to reduce carbon emissions by one- third over the next 15 years. his "pocket veto"-- exercised after congress had adjourned for the year-- was expected. 27 states are suing to stop the rule. the president is in hawaii fo

and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: the tisch wnet stt lincoln center in new york, this is pbs newshour weekend. >> thompson: good evening. thanks for joining us. i'm megan thompson, in for hari sreenivasan. the iraqi army claimed a major victory today over islamic state militants. the army said it has defeated isis fighters in the city of ramadi, about 80 miles west of baghdad, after a week of heavy fighting. an iraqi military spokesman said the u.s.-trained troops have retaken a complex isis was using as a headquarters and are now focusing on clearing out pockets of resistance. the iraqi government plans to hold a flag raising ceremony over the complex on monday. ramadi was captured

and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by conributions to your pbs station from viewers like you. thank you. from the tisch wnet studios at lincoln center in new york, megan thompson. >> thompson: good evening. thanks for joining us. i'm megan thompson, in for hari sreenivasan. officials now say at least 17 people are dead after a string of deadly storms and tornadoes ripped through the south earlier this week. last night, families near birmingham, alabama were left to sort through what was left of their homes after a tornado touched down christmas day. two hundred roads in alabama are still closed and flood warnings are still in effect

and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by 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. thanks for joining us. united nations secretary general ban ki moon says the climate change pact endorsed by close to 200 nations is a turning point" to make human life "sustainable on a healthy planet. world leaders are welcoming the agreement designed to curb planet-polluting carbon gases that have been causing a rise in global temperatures. the paris agreement approved yesterday commits countries to take steps that could

and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. at's why we are your tirement company. additional support has been provided by: and by the corporation for public broadcasting, and by 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. a key region in afghanistan could be on the verge of falling to the taliban. the deputy governor of helmand province, an area that u.s. troops once fought to secure, says urgent action is needed to prevent its collapse. the official posted an unusual public plea to afghan president ashraf ghani on facebook saying, quote: "helmand is standing on the brink, and there is a serious need for you to come." t

and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and rn enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support has beenee provided by: and by the corporation for public broadcasting, and by contributions to your pbs station from viewers like you. thank you. [ mid-tempo music plays ] steves: riding this gondola, you soar, landing in the sleepy, unpromoted village of gimmelwald. in 30 years of researching guidebooks, i've found hidden gems like this in every country. gimmelwald would have been developed to the hilt, like neighboring towns, but the village had its real estate declared an avalanche zone, so no one could get new building permits. the result? a real mountain community -- families, farms, and traditional ways. choosing places like gimmelwald and then meeting the peop

and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why w