For coral reefs, climate change is an existential threat. Australia's Great Barrier Reef has endured seven mass bleaching events over the past 25 years. Five have occurred in the past eight years.

For decades, the Great Barrier Reef has enjoyed World Heritage Status and been synonymous with diving, tourism and with Australia. But in June of this year, UNESCO threatened to downgrade the Great ...

The best way to get around the Great Barrier Reef is by car or boat ... This mode of transportation doesn't include the breathtaking aerial views provided from a plane, but boats depart at ...