California debates naming heatwaves to underscore deadly risk of extreme heat

Experts and advocates are also exploring new ranking systems to add urgency to the growing disaster of rapidly warming landscapes

Climate scientists from around the world issued dire warnings on Monday, in the latest IPCC report on the dangers posed in the unfolding climate crisis. Among them is extreme heat, a crisis that on average already claims more American lives than hurricanes and tornadoes combined.

Though the impact is already being felt, heatwaves are largely silent killers. Often, the toll is tallied far into the aftermath of an event and is vastly undercounted. Unlike fires and floods that produce immediate and visible destruction, heat's harmful effects can seem more subtle - even if they are in fact more deadly.