Understanding Fall Insect invasions

Tens of thousands of Pennsylvanians are locked in a weird autumn ritual, battling with ladybugs, beetles and other insect invaders trying to take over their homes. A Penn State entomologist explains the reason for the attacks, and says bug sprays probably won't win this war.

MP3 audio icon Podcast Invasive Insects 11.11.09.mp3 — MP3 audio, 3.22 MB (3373113 bytes)