Four radioactive wasp nests may indicate previously undetected environmental contamination at the decades-old Savannah River Site. Here’s what to know.

A radioactive wasp nest discovered near a nuclear waste tank at the Savannah River Site in South Carolina tested over 10 times the federal contamination limit. The U.S. Department of Energy says the nest poses no health risk,

Workers at South Carolina's Savannah River Site, a nuclear facility, found a radioactive wasp nest with radiation levels 10 times higher than federal regulations allow.