Discover the top causes of black poop like diet, supplements, and gut health conditions, plus the best treatment options ...

However, some foods—like black licorice and blueberries—or medicines like iron supplements and Pepto-Bismol can also make ...

in whale poop samples. The new paper instead looked for metals that are in short supply far from land and are often a limiting factor for the growth of ocean ecosystems. “In the Southern Ocean, iron ...