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‘Grandmother hypothesis’ may explain why killer whales and humans evolved menopause

There's a rare human trait that doesn't often make it into debates about what makes our species unique: menopause. Humans ...
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If we aren’t careful, we could miss the chance to learn cancer-fighting secrets from threatened whales and elephants

The loss of vulnerable mammals means scientists could miss out on useful quirks in their genetics ...
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Did whales gain the ability to live in the water by shedding genes?

Like stripping down to swim, the ancestors of whales and dolphins may have shed some genes during their transition from ...
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Ancient genetic oddity makes whales and other aquatic mammals deadly susceptible to common pesticides

Over the past 50 million years, a group of small, hoofed mammals gradually evolved into today’s whales and dolphins. In ...