Channels

    60 Minutes ABC News Adam Conover Adam Mockler Al Jazeera English AsapSCIENCE Associated Press BBC News Brave New Films Brian Tyler Cohen The Bulwark C-SPAN CNN Crash Course Deep Look Democracy Docket Democracy Now! DNews Face the Nation Fast Politics Frontline PBS Full Frontal with Samantha Bee Have I Got News For You Heather Cox Richardson Hysteria Inside Edition It's Okay To Be Smart Late Night with Seth Meyers Last Week Tonight Mary Trump Media Media Matters MeidasTouch Minute Physics MinuteEarth More Perfect Union Mother Jones Motherboard MSNBC MSW Media NBC News NASA NASA Goddard NASA JPL National Geographic National Science Foundation NOVA NPR PBS PBS NewsHour Pod Save America ProPublica Real Time with Bill Maher Reuters Salon SciShow SciShow Space Science Channel Science Friday Smithsonian Channel Talking Points Memo Taylor Lorenz TED Talks TEDx The Bitchuation Room The Atlantic The Daily Show The Damage Report The Ezra Klein Show The Good Liars The Late Show with Stephen Colbert The Laura Flanders Show The Lincoln Project The Majority Report with Sam Seder The New York Times The Real News The Ring of Fire The Young Turks ThinkProgress Video Thom Hartmann Program Time Magazine Today I Found Out Trace Elements TYT Politics U.S. Environmental Protection Agency Veritasium Vice Vice News Vocativ Vox Washington Post Yale Climate Connections Zeteo

What's Inside a Prosthetic Leg? | I Didn't Know That

National Geographic 11/13/2012