Taking care of humankind at +2°C

Taking care of humankind at +2°C

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Adapting to heat waves in urban areas

Heat waves are increasing in frequency, duration and intensity worldwide in response to climate change.

According to the Lancet Countdown, “vulnerability to extremes of heat has steadily risen since 1990 in every region, with 157 million more people exposed to heatwave events in 2017, compared with 2000”.

Today, nearly a third of the world’s population faces heat spikes for at least 20 days a year. By 2100, this proportion could rise to 70% of the population if nothing is done to limit global warming.

As a result, the number of temperature-related illnesses are also on the rise, including respiratory diseases, heat exhaustion, heat stroke, dehydration, kidney disease and even death (WHO). The increase in the number of deaths per additional degree Celsius of temperature is estimated at +2% to 5%.


Maarten K. VAN AALST

Director, Red Cross Red Crescent Climate Centre

of people more exposed to heat waves

felt in the city

more people would be added to urban areas within 30 years

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