Just As It’s Always Been, Earth Day Marks Big Problems, Big Choices
CHATHAM, Mass. — The tides here lay down a walkway of shells — horseshoe crabs, scallops, palm-size crabs — where the water meets dry sand. On Earth Day 2013 a nearly full moon is perched, like a round plate on a pedestal, amid an expanse of cloudless blue sky. Gulls soar and dive in a stout breeze, and in the nearby mudflats men and women with long-handled metal rakes in hand and collars turned up …