Huffington Post: A new aerial survey of the Great Barrier Reef shows the vast extent of a "severe" bleaching event that's caused widespread coral death over the past several weeks.
The National Coral Bleaching Taskforce study found 95 percent of individual reefs in the most pristine section of the ecosystem showed severe bleaching. The research covered 520 reefs across more than 600 miles of coastline and found just four that didn't show signs of damage.
Coral becomes "bleached" when the usually kaleidoscopic...