Global Warming Videos
Interview With Solar Impulse Pilot
ABC News' Alyssa Newcomb speaks with Bertrand Piccard as he completes the solar-powered airplane's flight across the U.S.
Bernie Sanders Reacts to Hillary Clinton's Refusal to Debate
The Vermont senator addresses the former secretary of state's recent decision not to debate and talks to the co-host about violence on the campaign trail.
'GMA's' Epic Campout: 'Glamping' With Joey Fatone and Alisha Marie
ABC News' Nick Watt and 'N Sync's Joey Fatone go "glamping" at Glacier National Park in Montana.
5 Islands Submerged Due to Climate Change
Donald Trump Considers Himself the 'Presumptive Nominee'
The GOP front-runner spoke to supporters and took questions after projections had him sweeping five primaries.
Bernie Sanders Rails Against Income Inequality in Rural America
The presidential candidate spoke in Huntington, W.Va., on the evening of five Northeast primaries.
Hillary Clinton Celebrates PA Primary Win in Philadelphia
The Democratic candidate hopes to return to Philadelphia for the convention in July as the party's nominee.
Sanders 'Can't Snap' Fingers and Tell Supporters to Back Clinton if Nominee
The Democratic candidate for president joins "This Week" ahead of high stakes primaries in five states Tuesday.
John Kerry Signs Paris Agreement With Granddaughter on Lap
The secretary of state signed the international climate change agreement on Earth Day.
Donald Trump Takes-on Bernie Sanders Meeting With Pope Francis
The GOP front-runner comments on the five minutes that the Vermont senator had to meet the pontiff.