A thunderstorm Friday afternoon
Yosemite, Yellowstone, Redwood: When we think of national parks, more often than not, we think of forests. But there are plenty of beach options, too.
A gorgeous new exhibit reveals just how salty the Dead Sea is.
It's relatively common to find debris from rocket launches in the waters off Cape Canaveral in Florida, but divers exploring the seabed recently uncovered artifacts.
The coastal waters around Rio de Janeiro, where many Olympic water competitions will soon take place, are reportedly teeming with harmful viruses and bacteria.