WASHINGTON — The giant African snail damages buildings, destroys crops and can cause meningitis in humans. But some people still want to collect, and even eat, the slimy invaders. The Agriculture Department is trying to stop them. Since June, department authorities have seized more than 1,200 live specimens of the large snails, also known as giant African land snails, all of them traced back to one person in Georgia, who was selling them illegally. read more