Formic acid is the main component of the ant’s major weapon against enemies. Being mainly used as a chemical defense, the acid is also exploited for recruitment and trail marking. The repelling effect ...

For decades, beekeepers have fought a tiny parasite called Varroa destructor, which has devastated honey-bee colonies around the world. But an even deadlier mite, Tropilaelaps mercedesae—or "tropi"—is ...