"Without action to reduce global warming emissions and invest in climate resilience measures, heat-related illnesses and deaths will continue to mount," one scientist warned after this past August and summer set US heat records.

The United States has endured its hottest summer on record, a new peak that scientists said should send alarm bells ringing over the increasingly dire impacts of climate change.

"Without action to reduce global warming emissions and invest in climate resilience measures, heat-related illnesses and deaths will continue to mount," one scientist warned after…