Many of the assignments and rules teachers come up with, often because they are pressured by their administrators, treat pleasure and joy as the enemies of competence and responsibility.

The Ebro Delta, in Spain, famous as a battleground during the Spanish civil War, is now the setting for a different contest, one that is pitting rice farmers against two enemies: the rice-eating giant apple snail, and rising sea levels.

Any smell might attract natural enemies that would try to eat the little comforting pats.

The impact/impacts of walking upright makes it easy to find food or guard against enemies.

They pump out perfumes designed to attract different insects who are natural enemies to the attackers.

Charles ought to know that as English history shows, it is kings, not republicans, who are the monarchy's worst enemies.

Rats and other animals need to be highly at tuned to social signals from others so that can identify friends to cooperate with and enemies to avoid.

This was not a volunteer soldier, not someone well paid, but an average guy, up against the best trained, best equipped, fiercest, most brutal enemies seen in centuries.

What political journalist, what party whip, would not want to know the make up of the WhatsApp groups in which Theresa May's enemies are currently plotting?