A study offers new insights into the record 2021 Western North America heat wave

The astounding western North America heat wave of 2021 broke records by tens of degrees, killed more than 1,000 people and sparked catastrophic wildfires. A new study affirms that it was driven largely by climate change, and for the first time comprehensively elucidates the multiple mechanisms — some strictly climate-related, others more in the realm of disastrous coincidences — that led to the mind-bending temperatures.The astounding western North America heat wave of 2021 broke records by tens of degrees, killed more than 1,000 people and sparked catastrophic wildfires. A new study affirms that it was driven largely by climate change, and for the first time comprehensively elucidates the multiple mechanisms — some strictly climate-related, others more in the realm of disastrous coincidences — that led to the mind-bending temperatures.

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