Texts & Transcripts
President Obama speaks about the Power Africa initiative at a fair in Nairobi, Kenya.
Secretary of State John Kerry issues a statement on the submission of emissions targets by China, the Republic of Korea, Serbia and Iceland and on U.S.-Bra...
The United States and Brazil issue a joint statement on climate change challenges and what they're doing about them.
Illicit trade in threatened and endangered species is a multibillion-dollar business, and the increasingly intense demand for products derived from Africa’...
Meet some young people who are using STEM to have fun and make a difference.
California passes the Global Warming Solutions Act, a comprehensive law aimed at reducing the state's carbon emissions, in 2006.
To celebrate Earth Day, we show you the innovations of big cities going green.
Scientific discovery is an intellectual adventure that benefits all of humanity.
Every year, thousands of animal species go extinct. Animals that once roamed the Earth in abundance are permanently disappearing from our planet at a hear...
Secretary Kerry says all nations have to be smarter about how they use and invest in energy in order to address the problem of climate change.
"Get involved and commemorate World Wildlife Day,” says State Department official Judy Garber. “Now is the time to get serious about wildlife crime and end...
“The Intergovernmental Panel on Climate Change just concluded its 41st session in Nairobi — continuing the tradition of rigorous international scientific c...
Several recipients of the 2010 and 2011 Presidential Early Career Awards for Scientists and Engineers reveal what they think is best about science.
The creation of Yellowstone National Park in 1872 sparked a great American conservation movement and tradition. Since then, the U.S. national park system ...
This photo gallery shows the many and varied effects of climate change around the world.
These hydrogen buses might be larger than cars, but they are greener.
Think we can survive without the ocean? Think again.
Singer and songwriter Jack Johnson describes when his love for the ocean began and discusses steps we can take to help protect it.