Axios

This summer's extreme weather is having ripple effects that could raise food prices in the U.S. and disrupt diets around the world.

Why it matters: Climate scientists and food supply experts, like those at the Food and Agriculture Organization (FAO) in Rome, have long warned about the impact of human-caused global warming on prices, food shortages and hunger.

The recent deadly heat wave in the Pacific Northwest, during which all-time temperature records were shattered by several degrees, is a prologue to what is coming across much of the U.S., Europe and Asia, a new study finds.

Why it matters: The study shows that the rate of climate change is an under-appreciated driver of extreme heat, and that today's quickening pace of warming virtually guarantees more extreme temperature records in coming decades.

A wildfire that has burnt at least 50,000 acres of land forced more than 1,000 residents and tourists to evacuate parts of western Sardinia, Italy, over the weekend, according to the New York Times.

The big picture: Multiple farms and private properties have been destroyed by the fire, which started Saturday near the village of Bonacardo in the province of Oristano and has quickly spread near multiple other towns.

The G20 just offered an extended preview of why spurring on-the-ground emissions cuts — not just airy pledges — will be so tough at the critical U.N. climate summit that's less than 100 days away.

Driving the news: The formal communique from the G20 energy ministers' meeting in Naples, Italy late last week finally arrived just yesterday, a reflection of the difficult and protracted talks.

The House Committee on Oversight on Monday requested an interview with ExxonMobil senior lobbyist Keith McCoy regarding the company's efforts "to mislead the global public" and Congress about fossil fuels' role in causing global warming.

Why it matters: The request for a transcribed interview on Aug. 9, sent Monday, comes after McCoy was caught on camera discussing the company's lobbying tactics. This is the most serious congressional action to date related to the widely reported videos in which McCoy spoke candidly and under false pretenses with representatives of the environmental group GreenpeaceUK.

Tesla is expected to report an eighth consecutive quarterly profit after markets close today, but still faces big questions despite showing it's now consistently in the black.

Why it matters: The company dominates U.S. electric car sales and is a leading player globally too, so its fortunes are both a business story and a climate story.

California's biggest wildfire merged with another blaze as it razed homes in a remote region in the state's north Sunday.

The big picture: The Dixie Fire, which erupted July 14 near the origin of the deadly 2018 Camp Fire in Butte County, is one of 86 large wildfires burning across the U.S. West.