Oyster hatchery sows pearls of wisdom on climate change

In this photo taken Thursday, March 31, 2016, cages containing oysters float on the Damariscotta River in Walpole, Maine. Mook Sea Farm and the University of New Hampshire are working together to monitor and adapt to changes in water chemistry caused by climate change. Mook is now pushing for expanding such monitoring to the rest of the Maine coast so others can better mitigate and adapt to the impacts of climate change. (AP Photo/Holly Ramer)