Menopausal whales lead the group, study says

March 6, 2015 5:55 PM

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What does an ocean-going titaness do after she has the lost the ability to bear young?

Well, for starters, she goes on living--sometimes past the ripe old age of 90, while male killer whales over 50 are dying off in droves. Throughout the animal kingdom, that is unusual enough.

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