Category U.S.

The melting of permafrost in the Arctic could result in toxic mercury leaching into the waters of Alaskan rivers, putting millions of people at risk. This “giant mercury bomb” lurks within the soils of permafrost in Alaska, which is slowly…

As summer vacations wrap up and kids return to school, one small bird is preparing for a monumental journey. Hummingbird migration season gets underway in August, sending the birds flying to warm destinations thousands of miles away to last out…