While air conditioning can certainly mitigate the dangers of extreme heat, experts say the threat of heat-related illnesses and death is present if you're unable, even with AC, to maintain a cool , Extreme heat warnings are in effect for parts of Arkansas, Missouri, Illinois, Kentucky, Tennessee, Mississippi and Louisiana., Air conditioning accounts for 7% of global electricity and 3% of carbon emissions. Here's how to beat the heat—efficiently., Parts of U.S. hit record high temperatures amid extreme heat About 128 million Americans from Louisiana to Maine are under heat advisories Wednesday amid a severe heat wave impacting much of the U.S., Today's Climate Why a Fan Can’t Always Cool You Down, and Other Unexpected Challenges in Heat Waves Strategies to combat heat stress have trade-offs, so context is key when trying them, experts say., .