This story appears in the June 2011 issue of National Geographic magazine. The sea star—often called a starfish, though it's no more a fish than it is a sheepdog—ranks with the most ...

We may receive a commission on purchases made from links. Travelers visit San Diego, California from all around the world to see the ocean, the mountains, and the desert. Immersed in art and ...

When teachers explain ocean tides, they frequently describe how the moon's gravity pulls on Earth and all of its water. This, they often say, leads to a gravitational imbalance, which stretches ...

Ankle-deep floodwater reached up to the powerpoints in some homes, with SES and Fire Rescue NSW temporarily relocating some ...