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Tales from the Hive
Our cinematographer films inside a hive and follows bees in flight to capture honeybee behavior.

Terror in Space
Russian and American astronauts experience life-threatening problems aboard the aging Mir space station.

Time Travel
Is time travel anything more than sci-fi fantasy? Leading physicists ponder building a time machine.

Titanic's Lost Sister
Underwater explorer Robert Ballard uses sonar technology to find the Britannic, a ship lost in the Aegean in World War I.

To The Moon
Relive the remarkable history of humankind's journeys to the moon.

Top Gun Over Moscow
Flights in Russia's powerful fighter jets are for sale to foreign travelers. So is the Russian Air Force still in the game?

Tracking El Niño
Scientists struggle to understand the El Niño phenomenon, second only to the seasons in its effect on global weather.

Treasures of the Sunken City
Divers search the seafloor for one of the seven wonders of the ancient world: the Lighthouse of Alexandria.

Trillion Dollar Bet
An elegant mathematical formula attracts Wall Street's attention and spawns a multi-trillion-dollar industry.

Truth about Impotence, The
NOVA reports on new hope for victims of erectile dysfunction.