Sally-lightfoot Crabs (Grapsus grapsus) feeding on algae at low tide, Ecuador, Galapagos Islands, James Island | Wolfgang Kaehler/LightRocket via Getty Images

Ancient Algae Blooms May Explain the Rise of Animals on Earth

New research points to environmental change 650 million years ago that brought about a proliferation of algae at the base of the food chain of complex organisms.

Published On 08/16/2017
5:21 PM EDT