Heat Soars to Record Levels Across West, Heads East

Several spots in the West set new high temperature records last week. Phoenix is normally hot this time of year, with a normal high of 102°F (39°C), but there were four consecutive days (June 3-6) when the high was more than 110°F (43°C). Each of those four days brought a new record high, with the temperature peaking at 115°F (46°C) on June 4...

The increase in extreme heat is one of the hallmarks of climate change. As the amount of greenhouse gases in the atmosphere continues to grow from human activity, the incidents of what we consider to be extreme heat today will become more common in the coming decades