Find by Interest Earth

Arctic Dinosaurs (October 7, 2008)
The Big Energy Gamble (January 20, 2009)
NOVA scienceNOW: Booming Sands (January 25, 2005)
Chasing El Nino (October 13, 1998)
Cracking the Ice Age (September 30, 1997)
Deadly Shadow of Vesuvius (November 10, 1998)
Descent Into the Ice (February 10, 2004)
Diamond Deception (February 1, 2000)
NOVA scienceNOW: Diamond Factory (June 30, 2009)
Dimming the Sun (April 18, 2006)
Doomsday Asteroid (April 29, 1997)
Everest: The Death Zone (February 24, 1998)
Everest: The Mystery of Mallory and Irvine (October 6, 1999)
Extreme Ice (March 24, 2009)
NOVA scienceNOW: Fastest Glacier (July 26, 2005)
Fire Wars (May 7, 2002)
Flood! (May 6, 1997)
Hunt for the Supertwister (March 30, 2004)
Jewel of the Earth (February 14, 2006)
NOVA scienceNOW: Dinosaur Plague (July 14, 2009)
NOVA scienceNOW: Hurricanes (January 25, 2005)
NOVA scienceNOW: Hurricane Katrina (October 18, 2005)
Last Extinction (March 31, 2009)
NOVA scienceNOW: Lightning (October 18, 2005)
Lost on Everest (January 18, 2000)
Magnetic Storm (November 18, 2003)
NOVA scienceNOW: Mass Extinction (November 21, 2006)
Mountain of Ice (February 11, 2003)
Mysterious Life of Caves (October 1, 2002)
Mystery of the Megaflood (September 20, 2005)
Mystery of the Megavolcano (September 26, 2006)
Origins (September 28, 2004)
NOVA scienceNOW: Profile: Lonnie Thompson (July 28, 2009)
Rafting Through the Grand Canyon (July 22, 1997)
Rafting Through the Grand Canyon (July 22, 1997)
NOVA scienceNOW: Secrets in the Salt (July 28, 2009)
Sinking City of Venice (November 19, 2002)
Storm That Drowned a City (November 22, 2005)
Volcano Above the Clouds (November 25, 2003)
Volcano's Deadly Warning (November 12, 2002)
Volcanoes of the Deep (March 30, 1999)
Volcano Under the City (November 15, 2005)
Warnings from the Ice (April 21, 1998)
Wave That Shook the World (March 29, 2005)
What's Up with the Weather? (April 18, 2000)