Environment

Coral reefs are vanishing faster than rain forests. Why? Every day for the last decade, our ocean has absorbed roughly 22 million tons of carbon dioxide.

Gracie the border collie brings a special skill set to Glacier National Park: keeping the wildlife living in the park safe from their visitors.

Chicago's rooftop gardens reuse water and reduce heat, which can reduce a building's power costs. The city has 418,000 square meters of high-rise greenery.

El Salvador's growing energy demands will be met, in part, with 10 new solar energy plants that the U.S. is helping to finance.

In this video, U.S. Special Representative for Iran Brian Hook presents some of the devastating effects of Iran's mismanagement of water resources.

Wind energy has come a long way. Today it's more efficient and cheaper than ever. What do you think you know about wind energy that isn't true?

It is not too late to curb the greenhouse emissions that are causing climate change, says Secretary Kerry, and an effective agreement is within reach.

Scientists are crowdsourcing data to learn more about beluga whales, their social behaviors and how their environment is affected by climate change.

Those watching the Opening Ceremony and viewing the Olympic Games see climate change as a major theme, from sustainable food to recycled medals.