Greenhouse gases are altering ocean chemistry. The acidification is damaging marine creatures and their ability to avoid predators and find food and mates.
After Hurricanes Eta and Iota swept through Central and South America, USAID jumped into action to provide relief supplies and other emergency aid.
Tech innovations using titanium-dioxide coatings on buildings can reduce smog by transforming harmful pollutants into healthier stuff.
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.
Climate scientists are in nearly unanimous agreement that the Earth’s atmosphere is getting warmer and will affect the way people around the world live.
Deputy Secretary of State John J. Sullivan says U.S.-Caribbean partnership builds resilience in the face of natural disasters and other challenges.
President Obama wants to protect landscapes and people from the consequences of climate change. He'll do that by preserving natural spaces.
The ocean ecosystem regulates climate, produces oxygen, and feeds about three billion people. But our oceans may not be able to provide these benefits much longer.
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.