The Download: solar geoengineering’s future, and OpenAI is being sued

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology.

Solar geoengineering startups are getting serious

Solar geoengineering aims to manipulate the climate by bouncing sunlight back into space. In theory, it could ease global warming. But as interest in the idea grows, so do concerns about potential consequences.

A startup called Stardust Solutions recently raised a $60 million funding round, the largest known to date for a geoengineering startup. My colleague James Temple has a new story out about the company, and how its emergence is making some researchers nervous.

So far, the field has been limited to debates, proposed academic research, and—sure—a few fringe actors to keep an eye on. Now things are getting more serious. So what does it mean for geoengineering, and for the climate? Read the full story.

—Casey Crownhart

This article is from The Spark, MIT Technology Review’s weekly climate newsletter. To receive it in your inbox every Wednesday, sign up here.

If you’re interested in reading more about solar geoengineering, check out:

+ Why the for-profit race into solar geoengineering is bad for science and public trust. Read the full story.

+ Why we need more research—including outdoor experiments—to make better-informed decisions about such climate interventions.

+ The hard lessons of Harvard’s failed geoengineering experiment, which was officially terminated last year. Read the full story.

+ How this London nonprofit became one of the biggest backers of geoengineering research.

+ The technology could alter the entire planet. These groups want every nation to have a say.

The must-reads

I’ve combed the internet to find you today’s most fun/important/scary/fascinating stories about technology.

1 OpenAI is being sued for wrongful death
By the estate of a woman killed by her son after he engaged in delusion-filled conversations with ChatGPT. (WSJ $)
+ The chatbot appeared to validate Stein-Erik Soelberg’s conspiratorial ideas. (WP $)
+ It’s the latest in a string of wrongful death legal actions filed against chatbot makers. (ABC News)

2 ICE is tracking pregnant immigrants through specifically-developed smartwatches
They’re unable to take the devices off, even during labor. (The Guardian)
+ Pregnant and postpartum women say they’ve been detained in solitary confinement. (Slate $)
+ Another effort to track ICE raids has been taken offline. (MIT Technology Review)

3 Meta’s new AI hires aren’t making friends with the rest of the company
Tensions are rife between the AGI team and other divisions. (NYT $)
+ Mark Zuckerberg is keen to make money off the company’s AI ambitions. (Bloomberg $)
+ Meanwhile, what’s life like for the remaining Scale AI team? (Insider $)

4 Google DeepMind is building its first materials science lab in the UK
It’ll focus on developing new materials to build superconductors and solar cells. (FT $) 

5 The new space race is to build orbital data centers
And Blue Origin is winning, apparently. (WSJ $)
+ Plenty of companies are jostling for their slice of the pie. (The Verge)
+ Should we be moving data centers to space? (MIT Technology Review)

6 Inside the quest to find out what causes Parkinson’s
A growing body of work suggests it may not be purely genetic after all. (Wired $)

7 Are you in TikTok’s cat niche? 
If so, you’re likely to be in these other niches too. (WP $)

8 Why do our brains get tired?
Researchers are trying to get to the bottom of it.  (Nature $)

9 Microsoft’s boss has built his own cricket app
Satya Nadella can’t get enough of the sound of leather on willow. (Bloomberg $)

10 How much vibe coding is too much vibe coding? 
One journalist’s journey into the heart of darkness. (Rest of World)
+ What is vibe coding, exactly? (MIT Technology Review)

Quote of the day

“I feel so much pain seeing his sad face…I hope for a New Year’s miracle.”

—A child in Russia sends a message to the Kremlin-aligned Safe Internet League explaining the impact of the country’s decision to block access to the wildly popular gaming platform Roblox on their brother, the Washington Post reports.

 One more thing

Why it’s so hard to stop tech-facilitated abuse

After Gioia had her first child with her then husband, he installed baby monitors throughout their home—to “watch what we were doing,” she says, while he went to work. She’d turn them off; he’d get angry. By the time their third child turned seven, Gioia and her husband had divorced, but he still found ways to monitor her behavior. 

One Christmas, he gave their youngest a smartwatch. Gioia showed it to a tech-savvy friend, who found that the watch had a tracking feature turned on. It could be turned off only by the watch’s owner—her ex.

Gioia is far from alone. In fact, tech-facilitated abuse now occurs in most cases of intimate partner violence—and we’re doing shockingly little to prevent it. Read the full story. 

—Jessica Klein

We can still have nice things

A place for comfort, fun and distraction to brighten up your day. (Got any ideas? Drop me a line or skeet ’em at me.)

+ The New Yorker has picked its best TV shows of 2025. Let the debate commence!
+ Check out the winners of this year’s Drone Photo Awards.
+ I’m sorry to report you aren’t half as intuitive as you think you are when it comes to deciphering your dog’s emotions.
+ Germany’s “home of Christmas” sure looks magical.