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Climate

How Hurricane Idalia Swamped Florida, in 9 Striking Photos

The region faces a long road to recovery.

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While it appears that Hurricane Idalia may not have been as destructive as initally feared, the storm still incurred plenty of damage, with heavy rains and flash flooding stretching from Florida’s Gulf Coast to eastern North Carolina. Nearly 300,000 customers have been left without power, scores of homes were lost, and as these photos show, the region will face a long road to recovery.

Flooded Tarpon Springs.A fire burns as flood waters inundate downtown Tarpon Springs, Florida, after Hurricane Idalia. Joe Raedle/Getty Images

A woman and her dog walking through floodwaters.A woman and her dog walk through floodwaters in Tarpon Springs.Joe Raedle/Getty Images

A man walking his bike through floodwaters.A man walks his bike past his flooded apartment in Crystal River, Florida.Joe Raedle/Getty Images

People kayaking through flooded streets.People kayak through flooded streets in Crystal River.Joe Raedle/Getty Images

A submerged car.A car that crashed after hitting a fallen tree sits in a gully in Perry, Florida.Sean Rayford/Getty Images

A storm-damaged gas station.A storm-damaged gas station in Perry.Sean Rayford/Getty Images

A storm-damaged Dollar Tree.A storm-damaged Dollar Tree store in Perry.Sean Rayford/Getty Images

A storm-damaged McDonald's sign.A storm-damaged McDonald's sign in Perry.Sean Rayford/Getty Images

People working to clear Interstate 10 of fallen trees.People work to clear Interstate 10 of fallen trees near Madison, Florida.Sean Rayford/Getty Images

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Climate Tech

Exclusive: Coreshell Raises $30 Million to Replace Chinese Graphite With American Silicon

The fundraise comes on the heels of a $50 million grant from the Department of Energy.

An American rock.
Heatmap Illustration/Coreshell, Getty Images

Almost all lithium-ion batteries on the market rely on graphite for their anodes, more than 90% of which is processed in China. That concentration has created a chokepoint in the Pentagon’s supply chain as the military increasingly turns to batteries to help its transportation network operate more quietly and reduce reliance on complex refueling logistics.

So when Congress passed the latest National Defense Authorization Act at the end of 2025, barring Chinese-linked battery materials from military use starting in 2028, Coreshell saw an opening. While the California-based silicon-anode battery startup had previously focused on automakers as its beachhead customers, it’s now shipping its first battery cells to the military for use on Navy ships and Army ground vehicles. On Wednesday, Coreshell announced a $30 million Series B to scale up manufacturing operations to meet the needs of this growing customer base.

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Blue
AM Briefing

Late and Over Budget

On inflation, Sublime’s lawsuit, and Bill Gates’ trash

A GE Vernova rendering.
GE Vernova

Current conditions: A large storm is roaring across the Northeast that will shower Michigan and Upstate New York with rain and snow by tomorrow • AccuWeather declared an early end to the 2026 Atlantic hurricane season, which saw 10 named storms and only one hurricane in October, breaking a 121-year record for the latest first hurricane • It’s a mild, cloudy day at the Rethondes Clearing in France’s Forest of Compiègne, where the armistice that ended World War I was signed 108 years ago today.


THE TOP FIVE

1. Electricity prices jumped again last month

Inflation is ticking up again, and faster than expected. That’s my colleague Matthew Zeitlin’s read on the latest numbers from the Bureau of Labor Statistics. Preliminary data from Heatmap and MIT’s Electricity Price Hub shows that electricity prices in particular spiked nearly 8% to 19.9 cents per kilowatt-hour in October from 18.5 cents in the same month last year. But that’s largely due to a change in the timing of a bill credit in California. Without that, the year over year price jump was just under 4%.

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Green
Daily Briefing

Exclusive: Martin Heinrich on What’s Next for Permitting Reform

One of the bill’s Democratic co-authors speaks about the bill’s outlook in Congress, what it means for clean energy and data centers, and why the president it helps most won’t take office until 2029.

Heatmap's Washington, DC event.
Heatmap Illustration/Taylor Mickal, Getty Images

The bipartisan permitting reform bill took a big step toward becoming law last night, when more than 70 senators voted to advance it past a key procedural hurdle.

About 12 hours later, I sat down at a Heatmap breakfast event in Washington, D.C. with one of its Democratic coauthors: Senator Martin Heinrich of New Mexico.

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