The GOP governor and presidential candidate has touted his environmental and economic credentials. He’s ignoring an environmental and economic disaster at home.

A relentless marine heat wave is devastating coral reefs — and scientists have mobilized to save them.

Coral is a critical piece of ocean biodiversity, supporting one in four species of fish. But scientists are warning that rising ocean temperatures will lead to massive coral bleaching over the coming year. Can it be stopped?

It’s the first time that a mass bleaching has happened during a La Niña year, when the ocean is supposed to be cooler than usual.