The Great Barrier Reef in Australia is turning white, and it's not a good sign. Higher water temperatures from climate change are leading to "coral bleaching," which makes coral vulnerable to ...

Narrator: This is the Great Barrier Reef, and it's dying ... leaving them completely white. It happens when unnaturally warm ocean water causes coral to expel the symbiotic, colorful algae ...

The Largest Living Structure on Earth Imagine something so vast that it's visible even from space—this is the Great Barrier ...

Echidnas, black flying foxes, brushtail possums, and over 180 species of birds can also be seen on the island. Dugongs and sea turtles swim in the waters around the island. Part of the outer Great ...