Texts & Transcripts
U.S. Permanent Representative to the United Nations Samantha Power, at a charity function, makes remarks on responding to the Ebola outbreak.
President Obama discusses what the United States is doing to respond to Ebola, both at home and abroad.
In the White House press briefing, press secretary Josh Earnest answers questions on the response to the Ebola outbreak.
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...
U.S. researchers are conducting clinical trials near Washington to test the efficacy of a potential Ebola vaccine.
In a commentary published in the Huffington Post, Secretary of State John Kerry says the world must act now on climate change.
A delegation of 15 U.S. companies will visit Lima, Peru, November 4–5 on a renewable-energy and energy-efficiency trade policy mission.
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.