‘The Deepest Map’ explores the thrills — and dangers — of charting the ocean

This planet light-years from Earth may be covered in ocean, NASA says

Farm-Raised Fish May Not Be Free of Mercury and Other Pollutants: Aquaculture fish, usually fed a controlled diet, are generally less exposed to mercury than their wild, free-foraging cousins. But because they are raised in the ocean they can still absorb mercury, PCBs and dioxins

Ancient Deep-Sea Dwellers: 104 Million-Year-Old Fossils Unveil Ocean’s Past