Researchers classify the coelacanth under the group Sarcopterygii, which include the earliest ancestors of amphibians, reptiles, and mammals.

Hawaii is home to some of the most incredible lava tubes that are open to exploration. These include Thurston Lava Tube in ...

enter the Lava Caves and Deep Woods biomes, and unlock Water Sprite Statue sprinklers. Breaking the Fire Seal unlocks once you pass through the other seals in the mine and reach floor 60 ...

Hawaii's Kilauea volcano shot lava as high as 1,000 feet into the air during its most recent eruptive episode, geologists said Thursday. Related video above: Hawaii's Kilauea volcano spews lava ...