Last year, Cynthia Berger tried for an autumn spinach harvest in her Pennsville, Pennsylvania, garden. The pests got there first. “It was slug city,” says Berger. The slimy, shell-less mollusks turned ...

Invasive species are always disruptive to the native wildlife in the ecosystems they take over. However, their impact on humans and domesticated animals is usually more indirect. An exception is the ...

Toads have taken over the world - for real. This isn't some horror movie I'm talking about. This is actually happening, people. Don't freak out, but toads have found their way onto six out of the ...