Bark beetles flee their own calls

The pine beetle is so tough that not even chainsaws, fire and icy cold have stopped its destructive march across North American forests.

But new research suggests there is a new weapon that could halt the tiny insect in its tracks -- the sound of its own voice.

Researchers at the Northern Arizona University believe they have found a silver bullet by digitally altering the sound of the bark beetles' squeaky, clicking calls. The sound drives them so buggy they flee or attack each other.