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. She is a frequent speaker at conservatories, arboretums, and garden clubs, and has been featured on radio shows and Voice of America.
Say ʻalgaeʼ and most people think of pond scum. What they donʼt 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 aeons. Algae created our oxygen-rich atmosphere, abundant...
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