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Creatures that look the same as they did millions of years ago
From the coelacanth to the cockroach, these "living fossil" creatures haven't changed much in millions or even hundreds of ...
That visibility comes with scrutiny. Mammals are among the best-studied organisms on Earth - and among the most threatened.
Roughly 6,800 mammal species are known to exist, compared with about 8,800 species of amphibian, 11,000 species of bird and 12,500 of reptile. Yet when most people picture biodiversity, they often ...
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