Residents across some 16 states are facing high levels of ultraviolet (UV) radiation levels from the sun on Saturday, a forecast map from the Environmental Protection Agency (EPA) showed. An ...

Experts are sounding the alarm over the hotter-than-average weather making its way across the US - warning that exposure to these temperatures could lead to life-threatening health complications.

Butterflies Navigate Using Map of UV Light, Study Finds By Karen Kaplan May 7, 2005 12 AM PT Times Staff Writer ...