Season 4
2007 · 17 episodes
Episodes
1. Glacier Meltdown
January 31, 2007
2. Destructive Forces
February 21, 2007
3. Stone Age Apocalypse
February 28, 2007
4. Comets
March 7, 2007
5. Prehistoric Americans
March 14, 2007
6. Deep Space Probes
March 27, 2007
Great distances and dangerous environments make robotic spacecraft the best way for scientists to explore our solar system. Acting as our eyes and ears, these probes have revealed secrets about the distant planets and their moons, their surfaces, weather and environments.
7. Dino Meteor
April 12, 2007
8. Planet Storm
April 26, 2007
9. Polar Apocalypse
April 1, 2007
10. Killer Lakes
May 3, 2007
Since the death of 1,700 people near a lake in Africa, scientists have uncovered a terrifying series of hazards in lakes across the world.
11. Ring of Fire
August 2, 2007
12. Alien Safari
August 9, 2007
With advanced technology in their hands, astronomers and scientists may now be capable of detecting extraterrestrial life in the universe. In fact, some think the proof may be found in as little as a decade. Astronomers involved in the effort, including those at SETI (Search for Extraterrestrial Intelligence), discuss the possibilities and the likely spots for finding life outside of Earth.
13. Hyper Hurricanes
October 18, 2007
14. Dangers of the Deep
October 25, 2007
15. Solar Force
October 30, 2007
16. Birth of the Solar System
November 6, 2007
Thanks to new developments in the technology of astronomy, scientists have been able to collect new information, giving them clues to how our solar system was formed.
17. Hubble Trouble
November 6, 2007