Tech
These Newly Discovered Cells Breathe in Two Ways
The team members went through a process of incrementally determining what elements and molecules the bacterial strain could grow on. They already knew it could use oxygen, so they tested other combinations in the lab. When oxygen was absent, RSW1 could process hydrogen gas and elemental sulfur—chemicals it would find spewing from a volcanic vent—and create hydrogen sulfide as a product. Yet while the cells were technically alive in this state, they didn’t grow or replicate. They were making a small amount of energy—just enough to stay alive, nothing more. “The cell was just sitting there spinning its wheels without getting any real metabolic or biomass gain out of it,” Boyd said.
Then the team added oxygen back into the mix. As expected, the bacteria grew faster. But, to the researchers’ surprise, RSW1 also still produced hydrogen sulfide gas, as if it were anaerobically respiring. In fact, the bacteria seemed to be breathing both aerobically and anaerobically at once, and benefiting from the energy of both processes. This double respiration went further than the earlier reports: The cell wasn’t just producing sulfide in the presence of oxygen but was also performing both conflicting processes at the same time. Bacteria simply shouldn’t be able to do that.
“That set us down this path of ‘OK, what the heck’s really going on here?’” Boyd said.
Breathing Two Ways
RSW1 appears to have a hybrid metabolism, running an anaerobic sulfur-based mode at the same time it runs an aerobic one using oxygen.
“For an organism to be able to bridge both those metabolisms is very unique,” said Ranjani Murali, an environmental microbiologist at the University of Nevada, Las Vegas, who was not involved in the research. Normally when anaerobic organisms are exposed to oxygen, damaging molecules known as reactive oxygen compounds create stress, she said. “For that not to happen is really interesting.”
In the thermal spring Roadside West (left) in Yellowstone National Park, researchers isolated an unusual microbe from the gray-colored biofilm (right).Photograph: Eric Boyd; Quanta Magazine
Boyd’s team observed that the bacteria grew best when running both metabolisms simultaneously. It may be an advantage in its unique environment: Oxygen isn’t evenly distributed in hot springs like those where RSW1 lives. In constantly changing conditions, where you could be bathed in oxygen one moment only for it to disappear, hedging one’s metabolic bets might be a highly adaptive trait.
Other microbes have been observed breathing two ways at once: anaerobically with nitrate and aerobically with oxygen. But those processes use entirely different chemical pathways, and when paired together, they tend to present an energetic cost to the microbes. In contrast, RSW1’s hybrid sulfur/oxygen metabolism bolsters the cells instead of dragging them down.
This kind of dual respiration may have evaded detection until now because it was considered impossible. “You have really no reason to look” for something like this, Boyd said. Additionally, oxygen and sulfide react with each other quickly; unless you were watching for sulfide as a byproduct, you might miss it entirely, he added.
It’s possible, in fact, that microbes with dual metabolisms are widespread, Murali said. She pointed to the many habitats and organisms that exist at tenuous gradients between oxygen-rich and oxygen-free areas. One example is in submerged sediments, which can harbor cable bacteria. These elongated microbes orient themselves in such a way that one end of their bodies can use aerobic respiration in oxygenated water while the other end is buried deep in anoxic sediment and uses anaerobic respiration. Cable bacteria thrive in their precarious partition by physically separating their aerobic and anaerobic processes. But RSW1 appears to multitask while tumbling around in the roiling spring.
It’s still unknown how RSW1 bacteria manage to protect their anaerobic machinery from oxygen. Murali speculated that the cells might create chemical supercomplexes within themselves that can surround, isolate and “scavenge” oxygen, she said—using it up quickly once they encounter it so there is no chance for the gas to interfere with the sulfur-based breathing.
RSW1 and any other microbes that have dual metabolism make intriguing models for how microbial life may have evolved during the Great Oxygenation Event, Boyd said. “That must have been a quite chaotic time for microbes on the planet,” he said. As a slow drip of oxygen filtered into the atmosphere and sea, any life-form that could handle an occasional brush with the new, poisonous gas—or even use it to its energetic benefit—may have been at an advantage. In that time of transition, two metabolisms may have been better than one.
Original story reprinted with permission from Quanta Magazine, an editorially independent publication of the Simons Foundation whose mission is to enhance public understanding of science by covering research developments and trends in mathematics and the physical and life sciences.
The main job of Google Chrome is to give you a window to the web. With so much engaging content out there on the internet, you may not have given much thought to the browser framework that serves as the container for the sites you visit.
You’d be forgiven for still using the default toolbar configuration that was in place when you first installed Chrome. But if you take a few minutes to customize it, it can make a significant difference to your browsing. You can get quicker access to the key features you need, and you may even discover features you didn’t know about.
If you’re reading this in Chrome on the desktop, you can experiment with a few customizations right now—all it takes is a few clicks. Here’s how the toolbar in Chrome is put together, and all the different changes you can make.
The Default Layout
Take a look up at the top right corner of your Chrome browser tab and you’ll see two key buttons: One reveals your browser extensions (the jigsaw piece), and the other opens up your bookmarks (the double-star icon). There should also be a button showing a downward arrow, which gives you access to recently downloaded files.
Right away, you can start customizing. If you click the jigsaw piece icon to show your browser extensions, you can also click the pin button next to any one of these extensions to make it permanently visible on the toolbar. While you don’t want your toolbar to become too cluttered, it means you can put your most-used add-ons within easy reach.
For the extension icons you choose to have on the toolbar, you can choose the way they’re arranged, too: Click and drag on any of the icons to change its position (though the extensions panel itself has to stay in the same place). To remove an extension icon (without uninstalling the extension), right-click on it and choose Unpin.
Making Changes
Click the three dots up in the top right corner of any browser window and then Settings > Appearance > Customize your toolbar to get to the main toolbar customization panel, which has recently been revamped. Straight away you’ll see toggle switches that let you show or hide certain buttons on the toolbar.
“The trade-off isn’t only ethical or economic,” Andreaux adds. “It’s also about reliability, privacy and personal security.”
Abed Kataya, digital content manager at SMEX, a Beirut-based digital rights organization focused on internet policy in the Middle East and North Africa, says piracy in the region is shaped less by culture than by structural barriers.
“I see that piracy in MENA is not a cultural choice; rather, it has multiple layers,” Kataya tells WIRED Middle East.
“First, when the internet spread across the region, as in many other regions, people thought everything on it was free,” Kataya says. “This perception was based on the nature of Web 1.0 and 2.0, and how the internet was presented to people.”
Today, he says, structural barriers still lead many users towards illegal platforms. “Users began to watch online on unofficial streaming platforms for many reasons: lack of local platforms, inability to pay, bypassing censorship and, of course, to watch for free or at lower prices.”
Payment access also remains a major factor. “Not to mention that many are unbanked, do not have bank accounts, lack access to online payments, or do not trust paying with their cards and have a general distrust of online payments,” Kataya adds.
Algerian students also share external hard drives loaded with television series, while in Lebanon streaming passwords are frequently shared across households. In Egypt, large Telegram channels distribute content across different genres, including Korean dramas, classic Arab films and underground music.
“We grew up solving problems online,” says Mira. “When something is blocked, you find a way around it. It’s … a fundamental human instinct.”
Streaming Platforms Adapting
Andreaux says StarzPlay has tried to address some of the payment barriers that limit streaming adoption in the region. “StarzPlay recognized early that payment friction was a regional barrier to adoption,” he says. “That’s why we invested in flexible subscription models and alternative payment methods, including telecom-led billing options that make access easier across different markets.”
At the same time, international media companies are working together to combat piracy through the Alliance for Creativity and Entertainment (ACE), a coalition of film studios, television networks and streaming platforms that targets illegal distribution of films, television and sports content. Its members include global companies such as Netflix as well as regional players like OSN Group, which operates the streaming service OSN+ across the Middle East and North Africa.
Kataya notes that legitimate streaming platforms are still expanding across the region. “The user base of official streaming platforms has been growing in the region,” he says. “For example, Shahid, the Saudi platform, is expanding and Netflix has dedicated packages for the region.”
“Other players, like StarzPlay and local platforms in Egypt, are also finding their place,” Kataya adds. “Social media also plays a huge role, especially when a film is widely discussed or controversial.”
Piracy carries legal and security risks, Andreaux says. “Rather than just ‘free streaming’, piracy exposes consumers to malware and insecure payment channels,” he says. “It also weakens investment in local content by depriving creators of revenue and reducing jobs.”
But the structural barriers described by users across the region remain. For many viewers in North Africa and the Levant, the challenge is not choosing between piracy and legality—it is whether legitimate access exists at all.
Minutes after Donald Trump announced that the US and Israeli governments had launched a “major combat operation” against Iran in the early hours of Saturday morning, disinformation about the attack and Tehran’s response flooded X.
WIRED has reviewed hundreds of posts on X, some of which have racked up millions of views, that promote misleading claims about the locations and scale of the attack.
Elon Musk’s social media platform is a verifiable mess: In some cases, alleged video footage of the attack shared in posts on X are actually months or years old. In several posts, video footage of apparent attacks have been attributed to incorrect locations. A number of images shared on X appear to be altered or generated with AI. Other posts attempt to pass off video game footage as scenes from the conflict.
X did not respond to a request for comment. Under Musk’s stewardship, X has become a haven for disinformation, especially during major global breaking news events. At the beginning of the Israel-Hamas war, and more recently during anti-immigration enforcement protests in LA, the platform has drowned in inaccurate and faulty posts.
Almost all of the most viral posts reviewed by WIRED on Saturday came from accounts with blue check marks, meaning they pay X for its premium service and could be eligible to earn money based on how much engagement their posts generate, even if the content is false. While some posts with disinformation have a community note appended beneath them to correct the record, they remain up on the site, and it’s unclear how many people viewed them before the notes appeared.
One video posted by a blue check mark account claimed to show ballistic missiles over Dubai; the clip actually showed Iranian ballistic missiles fired at Tel Aviv in October 2024. The post has been viewed over 4.4 million times.
One of the most viral clips shared on X in the hours after the attack claims to show an Israeli fighter jet being shot down by Iranian air defense systems. The video has been shared by dozens of accounts, including one post which has been viewed more than 3.5 million times. The provenance of the video is unclear, but there have been no credible reports of any Israeli jets being shot down over Iran on Saturday.
Another account that claims to be an expert in open source intelligence posted a video showing explosions, alongside the caption: “6 Iranian Hypersonic Missiles hit the Indian-invested Israeli Haifa port. Massive damages reported.” The video has been viewed 64,000 times, but the footage was actually captured last July and shows an Israeli attack on the defense ministry in Damascus, Syria.
In a number of cases, pro-Iranian accounts have been using images and footage from Saturday’s attacks to falsely claim successful strikes against Israel. “IRANIAN MISSILE IMPACT IN TEL AVIV RIGHT NOW,” the Iran Observer account wrote in a post featuring an image of Dubai. The post had been viewed over 200,000 times before it was deleted, but dozens of other posts sharing the same image and making the same claims remain on X.
Tehran Times, a news outlet aligned with the Iranian government, posted what appears to be an AI-generated image on X which claims to show that “an American radar in Qatar was completely destroyed today in an Iranian drone strike.” The use of AI generated images was flagged on X by Tal Hagin, a senior analyst with open source intelligence company Golden Owl. While there are reports that drone and missile attacks targeted the US Navy’s 5th Fleet headquarters in Bahrain, there are no reports yet of similar successful attacks in Qatar.
A pro-Trump account, which also features a blue check mark, posted images claiming to show the before and after pictures of the palace of Iranian Supreme Leader Ali Khamenei, which was targeted during Saturday’s missile attacks. (In a post on Truth Social, Trump claimed Khamenei was killed in an attack.) While the after picture appears to accurately show the palace after the attack, the before picture shows the Mausoleum of Ruhollah Khomeini, which is located on the other side of Tehran. The post has been viewed 365,000 times.
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