Materials Similar to Hurricanes: The Greatest Storms on Earth
- 40%: The Exploration of the Earth's Magnetosphere
- 39%: Cycles of the Earth and Atmosphere: The Greenhouse Effect
- 39%: Cycles of the Earth and Atmosphere: Global Climate Change
- 37%: The Great Magnet, the Earth
- 37%: The Round Earth and Christopher Columbus
- 35%: The Exploration of the Earth's Magnetosphere: Electric Currents from Space-- History
- 34%: Astronomy of the Earth's Motion in Space
- 33%: Sun, Earth and Moon Activity
- 32%: Explorers 1 and 3 - The Discovery and Early History of the Earth's Radiation Belts
- 32%: Live from Earth and Mars
- 30%: Magnet Man: Cool Experiments with Magnets
- 30%: USGS: Earthquakes
