The startup’s rapid growth suggests that enerprises are embracing AI agents.
Read more We compiled all the hottest AI wearables currently available, including Bee, Friend, Plaud, and more.
Read more Cybersecurity giant CrowdStrike denied it had been hacked following claims from a hacker group, which leaked screenshots from inside CrowdStrike’s network.
Read more Notorious hacking collective Scattered Lapsus$ Hunters takes credit for the breach that affected Salesforce customers’ data, and said it is planning another extortion campaign.
Read more The feature will show where users are based, how they’re connected to X, and how many times they’ve changed their username.
Read more 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.
We’re learning more about what vitamin D does to our bodies
At a checkup a few years ago, a doctor told me I was deficient in vitamin D. But he wouldn’t write me a prescription for supplements, simply because, as he put it, everyone in the UK is deficient. Putting the entire population on vitamin D supplements would be too expensive for the country’s national health service, he told me.
But supplementation—whether covered by a health-care provider or not—can be important. As those of us living in the Northern Hemisphere spend fewer of our waking hours in sunlight, let’s consider the importance of vitamin D. Read the full story.
—Jessica Hamzelou
This article first appeared in The Checkup, MIT Technology Review’s weekly biotech newsletter. To receive it in your inbox every Thursday, and read articles like this first, sign up here.
If you’re interested in other stories from our biotech writers, check out some of their most recent work:
+ Advanced in organs on chips, digital twins, and AI are ushering in a new era of research and drug development that could help put a stop to animal testing. Read the full story.
+ Here’s the latest company planning for gene-edited babies.
+ Preventing the common cold is extremely tricky—but not impossible. Here’s why we don’t have a cold vaccine. Yet.
+ Scientists are creating the beginnings of bodies without sperm or eggs. How far should they be allowed to go? Read the full story.
+ This retina implant lets people with vision loss do a crossword puzzle. Read the full story.
Partying at one of Africa’s largest AI gatherings
It’s late August in Rwanda’s capital, Kigali, and people are filling a large hall at one of Africa’s biggest gatherings of minds in AI and machine learning. Deep Learning Indaba is an annual AI conference where Africans present their research and technologies they’ve built, mingling with friends as a giant screen blinks with videos created with generative AI.
The main “prize” for many attendees is to be hired by a tech company or accepted into a PhD program. But the organizers hope to see more homegrown ventures create opportunities within Africa. Read the full story.
—Abdullahi Tsanni
This story is from the latest print issue of MIT Technology Review magazine, which is full of fascinating stories. If you haven’t already, subscribe now to receive future issues once they land.
The must-reads
I’ve combed the internet to find you today’s most fun/important/scary/fascinating stories about technology.
1 Google’s new Nano Banana Pro generates convincing propaganda
The company’s latest image-generating AI model seems to have few guardrails. (The Verge)
+ Google wants its creations to be slicker than ever. (Wired $)
+ Google’s new Gemini 3 “vibe-codes” responses and comes with its own agent. (MIT Technology Review)
2 Taiwan says the US won’t punish it with high chip tariffs
In fact, official Wu Cheng-wen says Taiwan will help support the US chip industry in exchange for tariff relief. (FT $)
3 Mental health support is one of the most dangerous uses for chatbots
They fail to recognize psychiatric conditions and can miss critical warning signs. (WP $)
+ AI companies have stopped warning you that their chatbots aren’t doctors. (MIT Technology Review)
4 It costs an average of $17,121 to deport one person from the US
But in some cases it can cost much, much more. (Bloomberg $)
+ Another effort to track ICE raids was just taken offline. (MIT Technology Review)
5 Grok is telling users that Elon Musk is the world’s greatest lover
What’s it basing that on, exactly? (Rolling Stone $)
+ It also claims he’s fitter than basketball legend LeBron James. Sure. (The Guardian)
6 Who’s really in charge of US health policy?
RFK Jr. and FDA commissioner Marty Makary are reportedly at odds behind the scenes. (Vox)
+ Republicans are lightly pushing back on the CDC’s new stance on vaccines. (Politico)
+ Why anti-vaxxers are seeking to discredit Danish studies. (Bloomberg $)
+ Meet Jim O’Neill, the longevity enthusiast who is now RFK Jr.’s right-hand man. (MIT Technology Review)
7 Inequality is worsening in San Francisco
As billionaires thrive, hundreds of thousands of others are struggling to get by. (WP $)
+ A massive airship has been spotted floating over the city. (SF Gate)
8 Donald Trump is thrusting obscure meme-makers into the mainstream
He’s been reposting flattering AI-generated memes by the dozen. (NYT $)
+ MAGA YouTube stars are pushing a boom in politically charged ads. (Bloomberg $)
9 Moss spores survived nine months in space
And they could remain reproductively viable for another 15 years. (New Scientist $)
+ It suggests that some life on Earth has evolved to endure space conditions. (NBC News)
+ The quest to figure out farming on Mars. (MIT Technology Review)
10 Does AI really need a physical shape?
It doesn’t really matter—companies are rushing to give it one anyway. (The Atlantic $)
Quote of the day
“At some point you’ve got to wonder whether the bug is a feature.”
—Alexios Mantzarlis, director of the Security, Trust and Safety Initiative at Cornell Tech, ponders xAI and Grok’s proclivity for surfacing Elon Musk-friendly and/or far-right sources, the Washington Post reports.
One more thing
The AI lab waging a guerrilla war over exploitative AI
Back in 2022, the tech community was buzzing over image-generating AI models, such as Midjourney, Stable Diffusion, and OpenAI’s DALL-E 2, which could follow simple word prompts to depict fantasylands or whimsical chairs made of avocados.
But artists saw this technological wonder as a new kind of theft. They felt the models were effectively stealing and replacing their work.
Ben Zhao, a computer security researcher at the University of Chicago, was listening. He and his colleagues have built arguably the most prominent weapons in an artist’s arsenal against nonconsensual AI scraping: two tools called Glaze and Nightshade that add barely perceptible perturbations to an image’s pixels so that machine-learning models cannot read them properly.
But Zhao sees the tools as part of a battle to slowly tilt the balance of power from large corporations back to individual creators. Read the full story.
—Melissa Heikkilä
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.)
+ If you’re ever tempted to try and recreate a Jackson Pollock painting, maybe you’d be best leaving it to the kids.
+ Scientists have discovered that lions have not one, but two distinct types of roars 
+ The relentless rise of the quarter-zip must be stopped!
+ Pucker up: here’s a brief history of kissing 
It has started to get really wintry here in London over the last few days. The mornings are frosty, the wind is biting, and it’s already dark by the time I pick my kids up from school. The darkness in particular has got me thinking about vitamin D, a.k.a. the sunshine vitamin.
At a checkup a few years ago, a doctor told me I was deficient in vitamin D. But he wouldn’t write me a prescription for supplements, simply because, as he put it, everyone in the UK is deficient. Putting the entire population on vitamin D supplements would be too expensive for the country’s national health service, he told me.
But supplementation—whether covered by a health-care provider or not—can be important. As those of us living in the Northern Hemisphere spend fewer of our waking hours in sunlight, let’s consider the importance of vitamin D.
Yes, it is important for bone health. But recent research is also uncovering surprising new insights into how the vitamin might influence other parts of our bodies, including our immune systems and heart health.
Vitamin D was discovered just over 100 years ago, when health professionals were looking for ways to treat what was then called “the English disease.” Today, we know that rickets, a weakening of bones in children, is caused by vitamin D deficiency. And vitamin D is best known for its importance in bone health.
That’s because it helps our bodies absorb calcium. Our bones are continually being broken down and rebuilt, and they need calcium for that rebuilding process. Without enough calcium, bones can become weak and brittle. (Depressingly, rickets is still a global health issue, which is why there is global consensus that infants should receive a vitamin D supplement at least until they are one year old.)
In the decades since then, scientists have learned that vitamin D has effects beyond our bones. There’s some evidence to suggest, for example, that being deficient in vitamin D puts people at risk of high blood pressure. Daily or weekly supplements can help those individuals lower their blood pressure.
A vitamin D deficiency has also been linked to a greater risk of “cardiovascular events” like heart attacks, although it’s not clear whether supplements can reduce this risk; the evidence is pretty mixed.
Vitamin D appears to influence our immune health, too. Studies have found a link between low vitamin D levels and incidence of the common cold, for example. And other research has shown that vitamin D supplements can influence the way our genes make proteins that play important roles in the way our immune systems work.
We don’t yet know exactly how these relationships work, however. And, unfortunately, a recent study that assessed the results of 37 clinical trials found that overall, vitamin D supplements aren’t likely to stop you from getting an “acute respiratory infection.”
Other studies have linked vitamin D levels to mental health, pregnancy outcomes, and even how long people survive after a cancer diagnosis. It’s tantalizing to imagine that a cheap supplement could benefit so many aspects of our health.
But, as you might have gathered if you’ve got this far, we’re not quite there yet. The evidence on the effects of vitamin D supplementation for those various conditions is mixed at best.
In fairness to researchers, it can be difficult to run a randomized clinical trial for vitamin D supplements. That’s because most of us get the bulk of our vitamin D from sunlight. Our skin converts UVB rays into a form of the vitamin that our bodies can use. We get it in our diets, too, but not much. (The main sources are oily fish, egg yolks, mushrooms, and some fortified cereals and milk alternatives.)
The standard way to measure a person’s vitamin D status is to look at blood levels of 25-hydroxycholecalciferol (25(OH)D), which is formed when the liver metabolizes vitamin D. But not everyone can agree on what the “ideal” level is.
Even if everyone did agree on a figure, it isn’t obvious how much vitamin D a person would need to consume to reach this target, or how much sunlight exposure it would take. One complicating factor is that people respond to UV rays in different ways—a lot of that can depend on how much melanin is in your skin. Similarly, if you’re sitting down to a meal of oily fish and mushrooms and washing it down with a glass of fortified milk, it’s hard to know how much more you might need.
There is more consensus on the definition of vitamin D deficiency, though. (It’s a blood level below 30 nanomoles per liter, in case you were wondering.) And until we know more about what vitamin D is doing in our bodies, our focus should be on avoiding that.
For me, that means topping up with a supplement. The UK government advises everyone in the country to take a 10-microgram vitamin D supplement over autumn and winter. That advice doesn’t factor in my age, my blood levels, or the amount of melanin in my skin. But it’s all I’ve got for now.
The recent Bitcoin “dumping” is a positive sign for the asset, but it could take years, not weeks, for Bitcoin to reach that magic $200,000 number.
Nic Puckrin, an analyst at The Coin Bureau, said Bitcoin is being “pulled in different directions by conflicting news” as it heads into the weekend.
Crypto’s recent slump could be the result of a market maker liquidity crisis triggered by the crypto crash in October, speculates BitMine’s Tom Lee.