Sign In or Create an Account.

By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy

Sustainability

An Arc'teryx jacket.
Lifestyle

The Quest to Ban the Best Raincoats in the World

Why Patagonia, REI, and just about every other gear retailer are going PFAS-free.

AM Briefing

Sour Diesel

On Westinghouse’s IPO, British fusion, and Spain’s renewables

Blue
AM Briefing

Life’s Not All Right on the Rhine

On Texas data centers, Microsoft’s carbon removal, and cross-border aluminum

Yellow
Climate Tech

How Clean Cement Startups Are Riding the AI Boom

Data centers are a big test for the nascent industry. But they also can’t fill the orderbooks.

Blue
Spokane.

Washington's ‘Wall of Flames’

On ‘draconian’ water cuts, Tesla’s China business, and Italian nuclear

Green
Dry riverbed.

Europe Braces to Bake

On Trump’s inverter ban, American antimony, and thermal batteries

Yellow
AM Briefing

Uncommon Wealth

On ‘precariously low’ oil stockpiles, China’s ammonia milestone, and a PFAS destroyer

Hundred dollar bills.
<p>Heatmap Illustration | Unsplash</p>

Current conditions: The wildfires in France and Europe are slowing, but three firefighters have died and the looming heat wave could bring yet more disaster • New York and New Jersey are facing flash floods as a storm system makes its way across the Northeast United States • Days of thunderstorms are causing floods across Vientiane, Laos’ sprawling capital.

THE TOP FIVE

1. Commonwealth Fusion Systems raises another $1 billion

Last month, I toured Commonwealth Fusion Systems’ headquarters in small-town central Massachusetts. The place was abuzz in activity. On the factory floor side, workers were assembling the magnets needed to ultimately form the torus-shaped reactor — think a giant doughnut with an interior that curves like the core of an apple — called the tokamak. On the actual reactor side, SPARC — the prototype that CFS expects will make history next year as the first private enterprise and only tokamak to ever generate more energy that it took to start the fusion reaction — was starting to look like a functional machine from my view on a second-story walkway overlooking the sterile assembly room. The old joke that fusion is the energy source of tomorrow — and always will be — certainly didn’t ring as funny now. I’ll tell you who isn’t laughing: All the new investors that just poured another $1 billion into CFS. The company announced its latest funding round early this morning, which brings the startup’s total fundraising since its launch as a spinout from the Massachusetts Institute of Technology in 2018 to $4 billion. CFS now accounts for 30% of all the private capital that has flowed into fusion. What distinguishes this round, my colleague Katie Brigham wrote, is that the money is coming from a bunch of institutional investors, such as pension funds and sovereign wealth funds, rather than venture capitalists. On a call with reporters this week, CFS’s newly-named chief financial officer, Lorence Kim, said it’s the first-time institutional investors comprised the majority of the new funding. When I asked the company’s spokeswoman for a percentage estimate breaking down the new versus old investors in this round, she declined to comment. Kim cautioned that the funding isn’t the kind of capital you raise before launching on a stock market. But his hire is notable. The former Goldman Sachs banker famously helped take the pharmaceutical giant Moderna public and held the top financial role through the start of the Covid-19 pandemic.

Keep reading...Show less
AM Briefing

FCC Won’t Let Chinese Inverters Be

On nuclear waste, a Nevada solar farm, and lithium-harvesting nanorobots

Inverter.
<p>Heatmap Illustration | Unsplash</p>

Current conditions: France just ordered 4,000 more people to evacuate the wildfires that have now displaced a third of a million people across southwestern Europe • The heat dome in the southwestern United States is driving temperatures in Phoenix up to 113 degrees Fahrenheit by the end of the week • Temperatures in Tuscany are topping 100 degrees this week as Europe’s latest heat wave takes hold.

THE TOP FIVE

1. Trump bans Chinese inverters

Just yesterday, I told you that China’s dominance over the manufacturing of the inverters needed to patch solar panels and batteries onto the grid and into data centers had peaked two years ago as Europe’s factories began booming. Hours after the newsletter landed in your inbox, the Trump administration unveiled plans to ban imports of Chinese power inverters in a bid to protect the U.S. buildout of artificial intelligence from sabotage and competition. On Tuesday, the Federal Communications Commission told CNBC its new restrictions aimed to safeguard the AI supply chain “from Chinese threats of disruption, data threat, and cyber attacks.” The measures also bar imports of Chinese-made humanoid and quadruped robots. As you may recall, Reuters broke news in May 2025 that the U.S. government had discovered rogue communications devices in the Chinese-made inverters. The story came out just a month after a frequency problem that stemmed from Spain’s struggle to sufficiently patch all of its solar generation on the grid triggered a blackout across Iberia, highlighting the sort of scenario a compromised “killswitch” device could set off in a bid to attack energy systems.

Keep reading...Show less