In the forests of California’s Sierra Nevada, nature takes a dark, cunning turn. There’s a species of red ant, Polyergus mexicanus, that doesn’t just fight its neighbours. It kidnaps not a few, but ...

Parasitic ants parasitize other ants using aggression and deception. Aa Aa Aa Among my fondest memories are the summers that I spent studying the ants of Elk Island National Park in western Canada.