Earth Day is a day designed to inspire awareness and appreciation for the Earth’s environment. It was founded by U.S. Senator Gaylord Nelson as an environmental teach-in in 1970 and is celebrated in many countries every year. Earth Day is celebrated in spring in the Northern Hemisphere and autumn in the Southern Hemisphere. Many communities celebrate Earth Week, an entire week of activities focused on environmental issues.

In the United States, Earth Day is celebrated each year on April 22. The United Nations celebrates Earth Day each year on the spring equinox, which is often 20 March. This is a tradition which was founded by peace activist John McConnell in 1969. The first governmental recognition of Earth Day, authorized by the city San Francisco, was on the spring equinox in 1970. The United Nations adopted this holiday the next year and celebrated Earth Day for the first time on the spring equinox in 1971.

Earth Day is similar to World Environment Day.

Forty years after the first Earth Day, the world is in greater peril than ever. While climate change is the greatest challenge of our time, it also presents the greatest opportunity – an unprecedented opportunity to build a healthy, prosperous, clean energy economy now and for the future.

Earth Day 2010 can be a turning point to advance climate policy, energy efficiency, renewable energy and green jobs. Earth Day Network is galvanizing millions who make personal commitments to sustainability. Earth Day 2010 is a pivotal opportunity for individuals, corporations and governments to join together and create a global green economy. Join the more than one billion people in 190 countries that are taking action for Earth Day.

TAKE ACTION !! Follow the link here to find things you can do to help make a lasting difference. Follow the Earth Day Network on Twitter here.