Activity 1: Shedding Light on a Planet
Activity 2: Testing the Inverse Square Law with Elodea
Activity 3: Using Chemical Energy
Activity 4: Redox Reactions and Energy for Life
Activity 5: Looking at Energy and Carbon Sources

Habitable Worlds Web Site

Science on the Internet

Sun and Life on Earth
Ask an Astronomer - What will happen to life on Earth when the Sun becomes a red giant?
SpaceDaily.com - End of the World Has Already Begun
NASA Earth-Sun System

Extreme Life
ScienceDaily.com - Extreme Life Discovery in Yellowstone
Astrobiology Magazine - Various Articles on Extreme Life
NASA Astrobiologist Identifies New Extreme Life Form

Redox Reactions
Balancing Redox Reactions
About.com - Balancing Redox Reactions
Wikipedia - Redox Reactions