Gisele Bündchen Rescues 'Beautiful' Stranded Sea Turtle Trapped in Fishing Net: Watch! "Today I was reminded that we must become more aware of our ways as a species and help protect all animals, ...

Turtle's-eye-view of the Great Barrier Reef 03:44. The world's largest coral reef is in trouble. Half of it has vanished in the last three decades, and it remains under threat from climate change ...