Axios

The Park Fire in California now ranks as the state's fourth-largest blaze on record, surpassing the SCU Lightning Complex from 2020.

Why it matters: The record shows how a mixture of long-term climate change, short-term weather conditions and land management can combine to produce a rapidly spreading and massive blaze.

The higher that global average temperatures climb, and the longer they stay at such heights, the greater the odds that potentially devastating climate tipping points will be triggered, a new study finds.

Why it matters: The research makes clear how every tenth of a degree of warming matters, and decisions made to cut emissions now could reverberate for centuries.

A potentially deadly heat wave is expanding from the Central U.S. to both coasts, with 104 million people under heat warnings and advisories early Friday.

Why it matters: The extreme heat poses an acute public health risk, particularly since it will last more than a week in some places.

Two new reports have bad news on methane emissions in the U.S. and worldwide.

Why it matters: Methane is a powerful planet-warming gas.

Dozens of massive wildfires burning across the western U.S. have forced thousands to evacuate, and forecasters warn another potentially record-breaking heat wave will trigger further fire risks.

The big picture: Some 88 large fires burning across the West are impacting air quality. Among them is a wildfire in Colorado that authorities said Wednesday killed one person and California's fifth-biggest blaze on record, the Park Fire.