Swarm storm: How rain set off a gnat boom

HONOLULU (KHON2) -- Chances are you've had them lately in your house, your yard, your mouth. We're talking about gnats. Lots of them. And while not a health hazard, they are a nuisance. It's a sunny afternoon in Makakilo today. A welcome change after several days of rain. But for runners like Christopher Hernandez, the [...]