Oyster hatchery sows pearls of wisdom on climate change

In this photo taken Thursday March 31, 2016, Jeff Auger flips over a cage containing oysters on the Damariscotta River in Walpole, Maine. Auger works for Mook Sea Farm, a hatchery that has partnered with the University of New Hampshire to study the effects of climate change on shellfish. Greenhouse gas emissions blamed for global warming also are making the ocean more acidic, which can interfere with the ability of shellfish like oysters to develop their shells. (AP Photo/Holly Ramer)