A record-breaking heatwave across the US west this week, with temperatures up to 30 degrees Fahrenheit above average for March, would have been "virtually impossible" without human-caused climate change, according to a rapid analysis by international climate scientists released Friday. The study found that climate change has made such extreme heat events four times more likely over the past decade, with 140 cities breaking temperature records and heat-related health risks rising across vulnerable populations.
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A record-breaking heatwave across the US west this week, with temperatures up to 30 degrees Fahrenheit above average for March, would have been "virtually impossible" without human-caused climate change, according to a rapid analysis by international climate scientists released Friday. The study found that climate change has made such extreme heat events four times more likely over the past decade, with 140 cities breaking temperature records and heat-related health risks rising across vulnerable populations.