Half of the world’s population has been exposed to heat waves and wildfire smoke at the same time
Climate change is a global phenomenon, meaning that everyone, in some way, will feel its devastating impacts. And increasingly, those impacts are happening simultaneously: Over the past two decades, more than half of the world’s population has experienced simultaneous heat waves and wildfires, occurring on the same day, a study found. Researchers at Monash University in Melbourne, Australia,…
A recent study published in Science Advances has found that over half of the world's population has experienced simultaneous heat waves and wildfire smoke at the same time over the past two decades. Researchers at Monash University in Melbourne, Australia, analyzed 20 years of data from 2000 to 2019 and discovered that the number of people exposed to both hazards increased by 287 million, from 761 million people per year in the first half of the period to over one billion people per year in the second half.
This means that 55.9% of the global population has experienced at least one day where a heat wave and wildfire pollution occurred in tandem. The study highlights how climate change is making extreme weather more frequent and how the health impacts of these events can compound when they overlap. Both heat waves and wildfires can cause serious harm to our health, and when they occur together, the risks become amplified, leading to increased mortality rates.
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