Within two decades, counties across Arizona are expected to see a significant increase in temperatures, potentially exposing residents to more harmful effects of warming, according to a USA TODAY ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Researchers have discovered a change in what scientists already knew about global warming dynamics. It had been widely accepted since the 1950s that global temperature rises were not consistent ...