This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. First, let’s define relative humidity.

A reader from Moline asks why there seems to always be higher humidity in the early morning than at other times of the day. The humidity to which he refers is relative humidity. And it is almost ...

Ambient temperature is a key environmental driver of cardiovascular health. With rising global temperatures and increasing frequency, intensity, and duration of extreme temperature events, ...