The Ghost Forest

    Isaac Newton’s Philosophiæ Naturalis Principia Mathematica was published July 5, 1687. Dolly the sheep, the first mammal cloned from an adult cell, was born July 5, 1996. Astronomer A.E. Douglas was born July 5, 1867. He studied the connection of sunspot cycles and tree growth rings, founding modern dendrochronology. The study of tree growth rings reminds […]

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