The world's largest iceberg, A23a, is stuck again. For more than 30 years, the giant frozen block — equivalent to the size of Rhode Island — was grounded on the sea floor in Antarctic coastal waters.

"Coaxing Sea-Monkeys to swim when and where you want them to is even more difficult than it sounds," says Caltech scientist studying the critters' impact on ocean currents. Michael Franco Freelancer ...

Researchers have found a new way to use satellites to monitor the Great Whirl, a massive whirlpool the size of Colorado that forms each year off the coast of East Africa, they report in a new study.

It happened on Tuesday in Main Beach, Queensland on the Vortex. Video shows guests be freed after 90 minutes of being suspended in the air, the park said. The stoppage was caused by a sensor ...