Neil deGrasse Tyson on the Afterlife, Origins of the Earth and Extreme Weather

[2015 Re-Release] Astrophysicist superstar Neil deGrasse Tyson pulls no punches. America's favorite scientist talks climate change, why he doesn't fear death, and whether he thinks Elon Musk's mission to Mars will succeed. #NeildeGrasseTyson #Astrophysicist