Double Exposure - Spot the Difference

Climate change destroys reefs. We've heard it plenty of times, but now we can see it, thanks to photography project Double Exposure.

This picture is of the Rhone Reef in the British Virgin Islands (in 2004 and in 2011). The difference is shocking.

For more photos, including ones worse than this one, check out the Double Exposure website, and see how climate change is already altering our world.