Swarms of cicadas emerging in US Midwest after 17 years

Coming soon: Brood XIII.

It sounds like a bad horror movie. But it's actually the name of the billions of cicadas expected to emerge this month in parts of the US Midwest after spending 17 years underground.

The red-eyed, shrimp-sized, flying insects don't bite or sting. But they are known for mating calls that produce a din that can overpower ringing telephones, lawn mowers and power tools.