SACRAMENTO, Calif. — Slow down, drivers. You could save America's rarest dragonfly. The Hine's emerald dragonfly is the only dragonfly on the federal endangered species list. The insect's largest ...

If you’ve ever watched a dragonfly zig and zag over a pond in search of dinner, you know how fast these gauzy-winged insects can move. In less than half the time it takes a human eye to blink, a ...