For a praying mantis, eating the wrong insect can be a one-way ticket to a watery grave. Some of its typical bug prey contain horsehair worms, Chordodes fukuii, which grow in a mantid's gut—and ...

Horsehair worms can control a host's brain and steer it to water, where it drowns. Scientists have studied the worms' mind-controlling power for years. But what's really going on? New research shows ...