Danielle Venton reports on the latest forms of zombie fungus to emerge:

Once infected by spores, the worker ants, normally dedicated to serving the colony, leave the nest, find a small shrub and start climbing. The fungi directs all ants to the same kind of leaf: about 25 centimeters above the ground and at a precise angle to the sun (though the favored angle varies between fungi). How the fungi do this is a mystery. "It's related to the fungus that LSD comes from," Hughes said. "Obviously they are producing lots of interesting chemicals."

Before dying, ants anchor themselves to the leaf, clamping their jaws on the edge or a vein on the underside. The fungi then takes over, turning the ant's body into a spore-producing factory. It lives off the ant carcass, using it as a platform to launch spores, for up to a year.