Invisible Universe Revealed
The story of the Hubble Space Telescope.
The Great Math Mystery
Take a mathematical mystery tour with Dr. Mario Livio.
Hagia Sophia: Istanbul's Ancient Mystery
Examine Hagia Sophia’s seismic secrets, which have insured its survival through a dozen earthquakes.
Petra: Lost City of Stone
Follow an archaeologist and sculptors to learn how the people of Petra built their city of stone.
Colosseum: Roman Death Trap
Watch a team re-create a lifting machine and trap-door system to release a wolf into the Colosseum.
Sinkholes: Buried Alive
Sinkholes are examined. The collapses can be gradual.
4/29/15 9:00 PM
4/30/15 2:00 AM
4/30/15 7:00 PM
4/30/15 9:00 PM
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A high-flying weather observation plane skirts the earth-space boundary zone in a search for sprites, which are fleeting flashes that flicker upwards from thunderstorms for a split-second. Included: footage shot from the International Space Station.
Nova: Asteroid: Doomsday or Payday? at 9pm on WGBH 2. Examine whether asteroids could be our economic salvation — or instruments of extinction. Watch a preview.
From The World's Science podcast to Nova, we'll deliver updates from these cutting edge programs. See a sample »