Twisted-wing parasites feel no pain

Reproduction in the insect order Strepsiptera—also known as twisted-wing parasites—is not for the fainthearted. To inseminate the eggs of its partner, the male partner injures the "neck" of the female with its hook-shaped ...

Female monkeys with female friends live longer

Female white-faced capuchin monkeys living in the tropical dry forests of northwestern Costa Rica may have figured out the secret to a longer life—having fellow females as friends.

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