There's confusion over how safe air quality is in L.A. as fires continue to burn, spewing wildfire smoke and toxins. We look at air quality readings, what's real and what's not and what people can do.

CONYERS, Ga. — A chemical cloud has been emanating from Conyers since Sunday, when a fire broke out at the facility of a company that makes pool and spa treatments and sprinkler system water reacted ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Parts of the United States have gotten an early taste of summer ...

Look at a map of the world showing all the airplanes currently in the air and what stands out most — apart from the staggering number of aircraft up there — are the gigantic holes in the sky where no ...