For every 10 questions that are answered correctly on the site, they will plant 1 tree through the organization called Trees for the Future.

In honor of Earth Day on April 22, The Nature Conservancy launched the Plant a Billion Trees campaign in the Atlantic Forest of Brazil. One dollar plants one tree in this on-the-ground reforestation effort that will help to remove 10 million tons of CO2!

Gov. Arnold Schwarzenegger and officials from 17 other states signed a pledge Friday to pressure Congress and the next president to quickly adopt aggressive limits on greenhouse-gas emissions.

Fourteen environmental projects will share a total of $90,000 in grants from Ford Motor Company this year

The North Carolina Wildlife Resources Commission headquarters in Raleigh features elements designed to save big on energy while doing little to hurt the environment.

New York-based brand and advertising agency, Union, announced today the launch of Union Green, a new agency that will define, create and execute environmentally friendly advertising campaigns for eco-conscious clients.

UK's chief environmental scientist has warned that an increased reliance on biofuels could lead to an increase in greenhouse gas emissions.

The dolphins aren't the only creatures at risk: Port Phillip Bay has a greater diversity of life than the Great Barrier Reef, and many species which are found nowhere else in the world and have never been fully studied.

A new UC Davis study predicts that climate change will irreversibly alter water circulation in Lake Tahoe, radically changing the conditions for plants and fish in the lake -- and it could happen in 10 years.

Georgia residents Jordan Price and Carlie Roberts - two inspired and passionate eco-enthusiasts - have embarked on an environmental campaign along the Appalachian Trail in the name of national nonprofit Keep America Beautiful