In late summer 2007, a hungry horde of boll weevils appeared in an area of west-central Texas that had been weevil-free for four years. Blame it on the weather: Forensic analyses indicate that these unexpected immigrants from infested areas hopped a long ride north on the winds of tropical storm Erin.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.