Waging war on hail
Nissan says hail cannons are protecting its new vehicles awaiting shipment in Mississippi.
Supplier: Hail Stop Equipments Inc., Quebec
Cost: $40,000 to $50,000
Function: Explode sound waves into the atmosphere at the sign of rain clouds
Effect: The waves, the company says, push water droplets out of Nissan's air space.
Reaction: Nissan says the cannons work. Some researchers say they're not so sure. The neighbors are covering their ears.
Those aren't the phantom cannons of Confederate ghosts booming beside the Nissan assembly plant in Canton, Miss., not far from Vicksburg.
