Doug Rasher, left, and Bob Steneck, examine Clathromorphum nereostratum collected in July 2014. Dr. Bob Steneck and Dr. Doug Rasher are part of an international team of scientists studying growth rings in the long-living, slow-growing alga Clathromorphum nereostratum to unlock the mysteries of the North Pacific ocean environment. Using lasers to read more Slow-growing alga are time capsules of ocean climate