German analyst Haustein said temperatures will continue to increase unless fossil fuel use is drastically cut worldwide.
The researchers estimated that about 2.8% of heart attack deaths could be attributed to the combination of extreme temperatures and high levels of fine particulate pollution.
Just as we have to be careful of the many dangers that lie in the hottest season of the year, we need to make sure we are taking care of our cats.
Some 20,000 people had to leave homes and hotels in Rhodes over the weekend.
Periods of extreme heat are likely to hit every two to five years if average global temperatures rise 2C above pre-industrial levels.
The statement from the Prime Minister's Office emphasized the nation's commitment to "stand by Greece in combating massive wildfires."
June's heatwave may be incomparable to others - with data compared as far back as the early 1950s.
Readers of The Jerusalem Post have their say.
Heatwaves continue to become longer, more frequent and more extreme as the years progress.
Europe's highest recorded temperature of 48.8C (119.8F), registered in Sicily two years ago, could be exceeded in the coming days.