Crude oil from BP’s 2010 Gulf of Mexico spill may have led to heart defects and premature death for tuna, researchers backed by the National Oceanic and Atmospheric Administration report.

Exposure to the oil may slow or cause an uncoordinated rhythm in the heartbeat of developing Atlantic bluefin and yellowfin tuna and an amberjack species, according to a study published yesterday in the Proceedings of the National Academy of Sciences. Damaged hearts may reduce swimming performance, jeopardizing a fish’s survival [...]