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 ...

York researchers publish major study on crisis in Yemen

Facing the complexities of popular unrest, the threat of civil war and the continuing war on terror, Yemen poses both a major concern and challenging dilemmas for international policy makers.

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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