 The study conducted by researchers in the Pacific Northwest regions of the US and Canada revealed that the extreme heatwave experienced in late June 2021 was made much more likely due to human caused climate change. The researchers used multiple methods including observations, modeling and statistical analysis to estimate the probability of such an event occurring without human caused climate change. They concluded that the event would be extremely rare if not for human caused climate change, and that the event would be even more intense if global temperatures continue to rise. This article was authored by S. Y. Philip, SFQ, G. J. Van Oldenborg and others.