This small juvenile skunk was caught by Des Plaines, Ill., homeowner Richard Kaulback. He says there have always been raccoons and opossums in the Chicago area, but this year, skunks have become prolific. Cheryl Corley/NPR hide caption

toggle caption Cheryl Corley/NPR

A worker displays two giant African land snails. For the third time since 1966, the snails are invading the US. Bobbi Zimmerman /AP hide caption

toggle caption Bobbi Zimmerman /AP

NPR thanks our sponsors

Become an NPR sponsor