41K views · 696 reactions | WATCH LIVE: From the 2009 "cap-and-trade" climate bill to executive orders on greenhouse gas emissions, science correspondent Miles O'Brien looks back at President Obama's record on addressing climate change. | PBS NewsHour | Facebook

WATCH LIVE: In part 1 of Judy Woodruff's interview with Warren Buffett, the chairman and CEO of Berkshire Hathaway talks about the economy, climate change and health care. | PBS NewsHour

Gen. Stanley McChrystal was the top commander of American and international forces in Afghanistan in 2009 when his career was cut short. He resigned after an article in Rolling Stone quoted him and his aides making candid, yet disparaging remarks about President Obama and Vice President Biden. McChrystal is now the author of a new book, "On Character: Choices That Define a Life." PBS News Hour's Amna Nawaz spoke to McChrystal about the book and the current leadership at the Pentagon. | PBS NewsH

4.5K views · 82 reactions | Less than nine months into his presidency, the events of September 11, 2001 put George W. Bush to the test—and shifted his focus from domestic priorities to a global hunt for the perpetrators. | American Experience | PBS | Facebook