Climate change is making giant heat waves crawl slower across the globe and they are baking more people for a longer time with higher temperatures over larger areas, a new study finds. Since 1979 ...

As global temperatures continue to rise, similar extreme heat waves in February could occur once every 10 years, according to ...

In extreme heat and high humidity, evaporation is slowed and the body must work extra ... greater risk from the effects of a prolonged heat wave than those living in rural areas.

A Southern "heat wave" will smash dozens of daily, and even a few monthly records from Colorado and Texas into the Deep South into this weekend. It's just the latest round of record warmth we ...

Projections warn that "much of the open ocean could reach a near-permanent" marine heat wave state by the end of this century ...

A new study is predicting estuaries along the East Coast of the U.S. will experience marine heat wave conditions up to a third of the year by the end of the century.

Mortality rates during heat waves have been put in the spotlight with research from The University of Queensland showing a 20% increase in heat wave-related deaths due to human-induced climate change.

A sharp increase in marine heat waves has been observed, disrupting ocean life and intensifying extreme weather.

SAO PAULO — Five cities in southern Brazil suspended classes Thursday due to a heat wave, authorities said, as temperatures in some places rose as high as 36 degrees Celsius (97 degrees Fahrenheit).