Mortal combat is the rational choice for wasps

(PhysOrg.com) -- Males of an unusual group of wasps fight to the death over females, even if they've already mated or are competing with their own brothers, a new study shows. The behaviour was seen in parasitoid wasps, which ...

Anger drives support for wartime presidents

It's no secret that Americans tend to throw their support behind a sitting U.S. president when the nation is thrust into a war or other potentially violent conflict with a foreign foe - a phenomenon known as the "rally 'round ...

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