Why it matters: Scientists believe that spraying sufficient amounts of sulfur dioxide or other reflective particles into the stratosphere could offset some level of global warming. But the unknown side effects, combined with complex questions about how to manage temperature control technology, make it highly controversial.

What’s next: The startup did not seek approval before launching the balloon. Now, having announced plans to ban any future solar geoengineering experiments, Mexico may become one of the first countries, if not the first, to announce an outright ban on such projects. Read the story in its entirety.

— James Temple

Read more: What is geoengineering and why should you care? As the threats of climate change grow, we will increasingly hear about the opportunities and dangers of geoengineering. That’s what it means.

A must read

I’ve combed the web to find the funniest/important/scary/interesting tech stories for you today.

1 Pressure is mounting on Germany to send tanks to Ukraine
Ukraine desperately needs them, but Germany is afraid of provoking Russia. (vox)
+ NATO allies are increasingly irritated. (FT$)
+ The Minister of Foreign Affairs of Germany did not prevent Poland from sending its own. (BBC)
+ If they are released, the tanks can help consolidate Ukraine’s victory (Economist $)

2 Thousands marched to mark the 50th anniversary of Roe v. Wade
Protesters took place in 46 US states. (NYT$)
+ Why the leak of the Roe verdict can teach future whistleblowers. (The Intercept)
+ The future of medical abortion will be decided in court. (vox)
+ The cognitive dissonance of watching the end of Roe online. (MIT Technology Review)

3 Crypto pseudo-banks are dying
And they can take some people’s savings with them. (WSJ$)
+ FTX’s Sam Bankman-Fried sure won’t be quiet. (Slate $)
+ Investors in the Gemini crypto exchange are growing understandably concerned. (pounds dollars)

4 Confidential US police files were stolen in a major hack
The thieves also stole tactical raid plans and a suspect report. (TechCrunch)

5 Donald Trump is reportedly set to ditch his own social media platform
He wants to return to Twitter when the Republican primaries heat up in June. (Rolling Stone $)

6 Ultrasound technology is not only for pregnancy screening
AI and other advances have turned it into a powerful diagnostic tool. (New Yorker $)

7 Live streaming is one of Big Tech’s biggest challenges
It’s damn hard to moderate. (pounds dollars)

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