Rodrigo Ruiz Ciancia/Getty Images When Dr. Stephanie Venn-Watson started studying dolphins at the US Navy’s marine mammal program, she wasn’t expecting to turn the food pyramid on its head.  Venn-Watson, a veterinary epidemiologist who’s worked in public health with the US Centers for Disease Control and Prevention, says the dolphins she worked with lived a pretty good life. They go out into the ocean each day, come back to hang out and live, on average, 50% longer lives than dolphins […]