Well, duh. Study proves the blindingly obvious. To women, anyway.
From football thugs clashing on the terraces to soldiers killing each other on the front line, most conflict can be blamed on the male sex drive, a study suggests.
The review of psychological research concludes that men evolved to be aggressive towards ‘outsiders’, a tendency at the root of inter-tribal violence.
It emerged through natural selection as a result of competition for mates, territory and status.