Nova: Season 40

Meteor Strike

54min - A meteor burst into a fireball over Siberia. Can we spot the next deadly asteroid in time?

Ancient Computer

Australia's First 4 Billion Years: Awakening

Australia's First 4 Billion Years: Life Explodes

Australia's First 4 Billion Years: Monsters

Australia's First 4 Billion Years: Strange Creatures

Nova

53min - On April 15, 2013, two bomb blasts turned the Boston Marathon finish line from a scene of triumph into a scene of tragedy. How did investigators transform the chaos into a coherent trail of clues, pointing to the accused killers?

Making Stuff Faster

Making Stuff Wilder

Making Stuff Colder

Making Stuff Safer

Cold Case JFK

53min - Fifty years later, what can science tell us about the Kennedy assassination and the investigations that followed? NOVA looks into the physical evidence using state-of-the-art forensics to try to solve the murder of the century.

At the Edge of Space

Asteroid: Doomsday or Payday?