Large penguin colonies poop so much you can see it from space—but why do scientists care? | National Geographic

A group of scientists studying Adélie penguins in Antarcia and climate change have found that the color of penguin droppings indicates whether the animals ate shrimp-like krill (reddish orange) or silverfish (blue). The distinction is interesting because the penguin's diet serves as an indicator of the response of the marine ecosystem to climate change. https://wired.trib.al/faTDkFo 🎥 Michael Polito, © Louisiana State University | WIRED Science