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Under federal law, even legal marijuana is illegal. John Oliver explains why conflicting drug laws pose serious problems.

Joan Baez performs her new song. 

An award winning documentary about Victor Jara, Chilean singer and song writer who transformed folk music into a revolutionary social movement known as “New Song” (Nueva Cancion). More info.

Plus, Seth takes a closer look at Trump and the GOP's plan to allow Internet companies to sell people's Internet data.

Bob Dylan will accept the Nobel Prize in Literature at a private meeting Stockholm and will send a taped acceptance lecture.

First Daughter Ivanka Trump gets a White House job, recently impeached South Korean President Park Geun-hye is arrested, and Donald Trump fights with his fellow Republicans.

#AhmedKathrada (Uncle Kathy) , who died this week, was a giant of the South African liberation movement. His voice lost none of its edge or clarity until the end.

Parameter Ghosts is an animation of otherworldly beauty. Technically, it's a random walk through the four-dimensional parameter space of strange attractors. 

Senator Bernie Sanders reacts to the death of Trumpcare.