Twenty university teams descend on the National Mall for the fourth Solar Decathlon in Washington, DC Their challenge: Build the most attractive, energy-efficient solar-powered home. The prize: The chance to play a major role in our the future. With the environmental time bomb ticking and a dependence on foreign oil threatening the nation, it’s critical that we wean ourselves off a fossil fuel addiction. In short, we need these houses now. Watch the video to hear from Chip Clark, a Virginia …

You don’t have to become a wind farmer to produce renewable energy. Eric Cotton from ECI Wind and Solar LLC joined us in the studio to explain some benefits of using solar energy.

Gravity–
1. It’s free
2. It’s inexhaustible
3. It’s everywhere
4. It’s themost powerful force inthe universe-
at holds planets and solar systems in place
b.It bends light rays
Why cant it’s power be harnessed like the sun energy and wind energy is?