A US middle school has closed for the remainder of the school year after authorities found it was contaminated with radioactive chemicals.
Officials say a nearby air monitor detected enriched uranium and neptunium-237 at Zahn’s Corner Middle School in Piketon, southern Ohio.
There are more than 300 pupils and 25 staff at the school.
A nearby nuclear plant made weapons-grade uranium for the Department of Energy until its closure in 2001. Read more