LifeCapuchin monkeys rival chimps as highly skilled nut-crackers Monkeys observed in Brazil can use tools, but they also know it doesn't take a sledgehammer to crack a nut – instead they exercise judgement and restraint News
LifeStag beetles' unwieldy jaws are surprisingly slick in flight The massive jaws that male stag beetles use in combat with rivals evolved the way they did because they hardly hamper the insects getting airborne News