These shrimplike crustaceans are the fastest snappers in the sea

The snapping claws of male amphipods—tiny, shrimplike crustaceans—are among the fastest and most energetic of any life on Earth. Researchers reporting in the journal Current Biology on February 8 find that the crustaceans ...

Women work harder than men: An anthropological study reveals why

For most people around the world, physical work takes up a great amount of time and energy every day. But what determines whether it is men or women who are working harder in households? In most hunter-gatherer societies, ...

When leaving your wealth to your sister's children makes sense

In most human societies, men pass on their worldly goods to their wife's children. But in about ten percent of societies, men transfer their wealth to their sister's sons, a process called matrilineal inheritance. A new study ...

Evolutionary rotation of fly genitalia tied to mating success

In the order Diptera, more-primitive species such as mosquitos generally do their deed in the end-to-end position. Higher (more evolved) species such as flies tend toward the male mounting the female from behind (male-above ...

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