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May 2026: Science History from 50, 100 and 150 Years Ago


Synchronous fireflies; Grand Canyon fossil footprints

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April 2026: Science history from 50, 100 and 150 years ago

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March 2026: Science history from 50, 100 and 150 years ago

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Over 500 Million Years Ago, Early Vertebrates Had Four Eyes That Could See 360 Degrees: During the Cambrian, when evolution was experimenting all sorts of strategies, early vertebrates may have had four eyes, and they were high-res eyes, too.