In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

A recent study by researchers at Columbia University revealed the states that had the highest levels of deadly arsenic in ...

Saturday’s quakes occurred roughly 30 miles northwest of Hayes, Kansas. The first occurred at 2:14 p.m. Central Daylight Time ...

Scientists found millions of Americans may be regularly exposed to dangerous levels of arsenic, and they may not even know it ...