This has been a difficult year for the Pantanal, a region that encompasses the world's largest tropical wetland area.

Intense late-summer heat will continue through Saturday and the first day of fall, along with perhaps a stray shower or storm ...

Mayors from 10 states along the Mississippi River convened in Louisiana’s capital this week to announce a cooperative ...

In Puerto Rico and other hard-hit places, marine researchers are trying to restore reefs and make corals more resilient — with some recent success.

Builders knew how to keep people cool in hot, dry climates thousands of years ago. It's time to get that knowledge back.