WASHINGTON (CBSDFW/AP) — Fireflies flash not just for sex, but survival, a new study suggests. Scientists wanted to find out if there's more to the lightning bug's signature blinking glow than finding ...

In certain parts of the U.S., summer nights begin with an unbeatable light show. As dusk settles in, tiny yellow-green beads of light pulse in the darkness: lightning bugs just starting out for the ...