When the 2021 Pacific Northwest heat wave peaked at 121 degrees Fahrenheit, it buckled roads, melted power lines, killed hundreds and led to a devastating wildfire. Climate scientists were shocked to see heat so severe.

When the 2021 Pacific Northwest heat wave peaked at 121 degrees Fahrenheit, it buckled roads, melted power lines, killed hundreds and led to a devastating wildfire. Climate scientists were shocked to see heat so severe.