JUST MONKEYS

Monkeys in a food-handout experiment got enraged when treated unequally and threw their food out of the cage in protest. Kevin McCabe, who studies cooperation at George Mason University in Fairfax, Virginia, US, says the results suggest that the ability to recognise unjust treatment is rooted in basic biological mechanisms. Too bad most humans are no longer able to recognize unjust treatment - like, say, keeping monkeys in cages for fun experiments like this.