The latest findings come during a summer which has seen heat records smashed across the continent.
When the air temperature rises above the skin temperature, using a fan speeds up the transfer of dry heat towards the body.
Animal sanctuary staff spent more than 24 hours trying to save the lion, who led a small pride of three.
Severe thunderstorms will pose a risk to mid-Atlantic through to southern New England until Wednesday.
A heatwave is gripping much of the nation. In Omaha, temperatures soared enough that the Weather Service was able to cook biscuits in the backseat of a car.
Mitch Petrus, who played with the Giants, the Patriots and the Titans had been working all day in his family's shop near Little Rock, Arkansas.
Most of us have tricks for staying cool when the mercury rises, but it's just as important to keep your dog or cat safe during a heatwave.
The National Weather Service has urged the public to stay safe in the excessive heat.
Towards the end of June, Europe experienced a sweltering heatwave that saw the mercury rise to record highs in some areas.
Global warming will lead to a significant increase in the frequency and severity of extreme heat across the contiguous states, according to the Union of Concerned Scientists.
The row erupted on the banks of the Isar in southern Germany as temperatures soared to 89 degrees during a June heatwave.
The archaeologists expect more than 1,000 sites to be revealed.
Belgium's drought has approached record levels, and it is hitting the region responsible for bringing a major part of its festive spirit.
The central city of Kumagaya broke the country's heat record, while Tokyo reached 104 degrees for the first time ever.
New York, Pennsylvania and New Jersey expected to hit high temperatures this weekend, with increased humidity.
The city zoo has made some provisions for a pleasant summer after last year's drab and rainy weather.
Animals need some ice-cold loving too.
After a fairly miserable start to the spring, it looks like summer has finally arrived.
Fourteen of the 15 hottest years on record have been in the 21st century.