Pigweed, ragweed and other monsters have begun to outsmart the advanced technologies that protect the biggest U.S. cash crops
Animal mimicry takes many forms—including chemical and acoustic varieties—and offers unique insights into evolution
By the latest estimate, the observable universe contains 200 billion galaxies. Astronomers wonder: Why so few?
A forgotten number system invented in the 19th century may provide the simplest explanation for why our universe could have 10 dimensions
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