Ruth Kassinger is the author of Paradise Under Glass and A Garden of Marvels, as well as a number of award-winning science and history books for young adults. She has written for the Washington Post, the Chicago Tribune, Health magazine, National Geographic Explorer, and other publications.
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Say “algae” and most people think of pond scum. What they don’t know is that without algae, none of us would exist. There are as many algae on Earth as stars in the universe, and they have been essential to life on our planet for eons. Algae ... SEE MORE