United States

United States


Google Translate

Clean energy was at the fore in a number of ways on Earth Day this year. The use of wind power was one of the options visitors could explore in visiting Evergreen Lake House in a mountainous area of Colorado on April 20. Exhibitors at the Earth Day festival included the National Renewable Energy Laboratory and the Sierra Club.

Have you registered with us yet?

Register now to enjoy more articles
and free email bulletins.

Sign up now
Already registered?
Sign in