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Char and sockeye salmon moving upstream. Salmon are high in the omega-3 fatty acid DHA. Jonny Armstrong / USGS

By Bret Stetka

Glaciers continue to melt. Sea levels are on the rise. And now scientists believe the changing climate may put our brains at risk. A new analysis predicts that by 2100, increasing water temperatures brought on by a warming planet could result in 96 percent of the world's population not having access to an omega-3 fatty acid crucial to brain health and function.

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Obama's EPA chief visited Los Angeles to get a first-hand view of LA River revitalization efforts in Nov 2013. Los Angeles District / Flickr

By Andrea Thompson

In the debate over how to respond to the perils posed by the earth's changing climate, the ground has been rapidly shifting in recent years: as the Trump administration has retreated from efforts to curb greenhouse gas emissions and engage in climate diplomacy and public demand for action has grown — particularly among younger generations — cities and states have stepped into the breach.

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