It's no secret that Phoenix is hot, but late summer and the start of fall were scorchers, even by Valley of the Sun standards. Between Sept. 23 and Oct. 14, Phoenix set daily record high temperatures ...

When we talk about climate change, we most often talk about changes in air temperature—and with good reason. The rapid rise in global and U.S. average air temperatures is a direct result of climate ...

Scientists believe they have found a way to improve warning systems for vulnerable communities threatened by humid heatwaves, which are on the rise due to climate change and can be damaging and even ...