Add Yahoo as a preferred source to see more of our stories on Google. Visitors entering the Rocky Flats National Wildlife Refuge are now seeing two very different messages about safety — posted just ...

An undated photo from the 1980s, of two teenagers stepping on rocks and wooden planks on Coldwater Creek. The photo is from a scrapbook kept by Sandy Delcoure, who lived on Willow Creek in Florissant ...

The signs released by the U.S. Army Corps of Engineers warn of "low-level radioactive materials present" near Coldwater Creek in St. Louis. Federal officials plan to post warning signs along a ...

FLORISSANT, Mo. – Florissant residents could soon see new signs along Coldwater Creek letting people know about radioactive contamination. “Areas of low-level contamination do exist that do not pose a ...

Radioactive Warning signs are being installed near entrances to Rocky Flats National Wildlife Refuge, sharply contradicting existing signs from the USFWS nearby. US health officials monitor deadly ...

Visitors entering the Rocky Flats National Wildlife Refuge are now seeing two very different messages about safety — posted just feet apart. At the northwest entrance off Highway 128, federal signs ...

Federal officials plan to post warning signs along a contaminated suburban St. Louis creek where generations of children were exposed to radioactive material. Coldwater Creek, which winds between ...