Tech
Robot ‘backpack’ drone launches, drives and flies to tackle emergencies
Introducing X1: The world’s first multirobot system that integrates a humanoid robot with a transforming drone that can launch off the humanoid’s back, and later, drive away.
The new multimodal system is one product of a three-year collaboration between Caltech’s Center for Autonomous Systems and Technologies (CAST) and the Technology Innovation Institute (TII) in Abu Dhabi, United Arab Emirates. The robotic system demonstrates the kind of innovative and forward-thinking projects that are possible with the combined global expertise of the collaborators in autonomous systems, artificial intelligence, robotics, and propulsion systems.
“Right now, robots can fly, robots can drive, and robots can walk. Those are all great in certain scenarios,” says Aaron Ames, the director and Booth-Kresa Leadership Chair of CAST and the Bren Professor of Mechanical and Civil Engineering, Control and Dynamical Systems, and Aerospace at Caltech. “But how do we take those different locomotion modalities and put them together into a single package, so we can excel from the benefits of all these while mitigating the downfalls that each of them have?”
Testing the capability of the X1 system, the team recently conducted a demonstration on Caltech’s campus. The demo was based on the following premise: Imagine that there is an emergency somewhere on campus, creating the need to quickly get autonomous agents to the scene. For the test, the team modified an off-the-shelf Unitree G1 humanoid such that it could carry M4, Caltech’s multimodal robot that can both fly and drive, as if it were a backpack.
The demo started with the humanoid in Gates–Thomas Laboratory. It walked through Sherman Fairchild Library and went outside to an elevated spot where it could safely deploy M4. The humanoid then bent forward at the waist, allowing M4 to launch in its drone mode. M4 then landed and transformed into driving mode to efficiently continue on wheels toward its destination.
Before reaching that destination, however, M4 encountered the Turtle Pond, so it switched back to drone mode, quickly flew over the obstacle, and made its way to the site of the “emergency” near Caltech Hall. The humanoid and a second M4 eventually met up with the first responder.
“The challenge is how to bring different robots to work together so, basically, they become one system providing different functionalities. With this collaboration, we found the perfect match to solve this,” says Mory Gharib, Ph.D., the Hans W. Liepmann Professor of Aeronautics and Medical Engineering at Caltech and CAST’s founding director.
Gharib’s group, which originally built the M4 robot, focuses on building flying and driving robots as well as advanced control systems. The Ames lab, for its part, brings expertise in locomotion and developing algorithms for the safe use of humanoid robots. Meanwhile, TII brings a wealth of knowledge about autonomy and sensing with robotic systems in urban environments. A Northeastern University team led by engineer Alireza Ramezani assists in the area of morphing robot design.
“The overall collaboration atmosphere was great. We had different researchers with different skill sets looking at really challenging robotics problems spanning from perception and sensor data fusion to locomotion modeling and controls, to hardware design,” says Ramezani, an associate professor at Northeastern.
When TII engineers visited Caltech in July 2025, the partners built a new version of M4 that takes advantage of Saluki, a secure flight controller and computer technology developed by TII for onboard computing. In a future phase of work, the collaboration aims to give the entire system sensors, model-based algorithms, and machine learning-driven autonomy to navigate and adapt to its surroundings in real time.
“We install different kinds of sensors—lidar, cameras, range finders—and we combine all these data to understand where the robot is, and the robot understands where it is in order to go from one point to another,” says Claudio Tortorici, director of TII. “So, we bring the capability of the robots to move around with autonomy.”
Ames explains that even more was on display in the demo than meets the eye. For example, he says, the humanoid robot did more than simply walking around campus. Currently, the majority of humanoid robots are given data originally captured from human movements to achieve a particular movement, such as walking or kicking, and scaling that action to the robot. If all goes well, the robot can imitate that action repeatedly.
But, Ames argues, “If we want to really deploy robots in complicated scenarios in the real world, we need to be able to generate these actions without necessarily having human references.”
His group builds mathematical models that describe the physics of that application to a robot more broadly. When these are fused with machine learning techniques, the models imbue robots with more general abilities to navigate any situation they might encounter.
“The robot learns to walk as the physics dictate,” Ames says. “So X1 can walk; it can walk on different terrain types; it can walk up and down stairs, and importantly, it can walk with things like M4 on its back.”
An overarching goal of the collaboration is to make such autonomous systems safer and more reliable.
“I believe we are at a stage where people are starting to accept these robots,” Tortorici says. ” In order to have robots all around us, we need these robots to be reliable.”
That is ongoing work for the team. “We’re thinking about safety-critical control, making sure we can trust our systems, making sure they’re secure,” Ames says. “We have multiple projects that extend beyond this one that study all these different facets of autonomy, and these problems are really big. By having these different projects and facets of our collaboration, we are able to take on these much bigger problems and really move autonomy forward in a substantial and concerted way.”
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I tried the battery version, which does require you recharge it every couple of weeks, but the wired-in version is the top recommendation on our guide to the Best Video Doorbells.
A Better Birdhouse
I had a new-to-me problem this spring: bird invasion. A little bird made a nest in my front-door wreath without us noticing. One evening, my sister opened the door, and the bird flew out of the nest and straight into our house. After a 30-minute battle to get it outside again (and keep my cat from eating it), it wasn’t until we saw the bird fly off the door again the next day that we realized it was calling our home its home, too.
If this is a common problem at your house, our resident bird-gear tester Kat Merck has a solution: a smart nesting box. Birdfy makes a few different smart bird feeders we like for bird-watching, and the Nest Duo is a birdhouse that lets you watch the birds while they nest inside of it. It’s a slim, attractive box that will add to your front yard’s style while also packing two solar-powered cameras (one facing the entrance, one focused inside) so you can bird-watch from multiple angles. It comes with different hole sizes to appeal to different species, metal predator guards to prevent chewing around the hole, and a remote control to reset or recharge the camera without disturbing your feathered neighbors.
Stylish Smart Lights
Govee
Outdoor Clear Bulb String Lights
I’ve liked Govee’s smart outdoor string lights before, usually for my holiday decor, and have previously recommended something similar with a bistro-light-like look that happened to be smart. These clear bulb string lights are part of Govee’s current lineup and have a contemporary twist with a triangle in the center instead of the wire filament. These are a fun option for outdoor lights you can enjoy on warm nights, and they can do every color and shade of white without looking as bulky as permanent outdoor lights. (Added bonus, these lights are also Matter compatible!)
Fresh Bulbs
Cync
Smart LED Light Bulb, PAR38
If you have light fixtures you want to remote-control, add an outdoor smart bulb. There are tons to choose from, and you can usually find one from any brand you already have at home. The only downside is that outdoor-rated smart bulbs are usually 4.75-inch-diameter PAR38-style bulbs, so they’re best for downward-facing floodlights on your porch or balcony. They’ll likely be too big to fit in a wall fixture as a replacement for a normal-sized bulb. Don’t just grab any smart bulb—not all are outdoor-rated. Check for mentions of outdoor use and waterproof ratings to make sure they’re safe to use. I’m a big fan of Cync bulbs, and the brand has an outdoor version of the Cync Full Color bulbs I like to use indoors. You’ll be able to add fun colors as well as shades of white, so you can turn the porch a spooky orange or red for Halloween, pink for Valentine’s Day, or the colors of your favorite sports team on game day.
Remote-Controlled Garage
If your garage is the centerpiece of your home’s curb appeal, you can control it as easily as a smart door by adding a smart controller. You can do two different styles: I have the Chamberlain MyQ professionally installed smart garage opener, which means the device that controls my garage has these smarts built into it (plus a camera, but I find it doesn’t work great with how far the device is from my Wi-Fi router), or you can get a smart garage controller that can add smart features onto an existing garage door. Both let you check whether the garage is open or closed and operate it remotely, and you can add a video keypad that doubles as a video doorbell and can let you open or close the garage without your phone.
Smart Shades
The front of my home faces west, so it’s absolutely baking at the end of the day. What I need to add are some of our favorite smart shades to automate closing the shades on that side of the house at the right time of day. These also give your home a nice, cohesive look and immediate, controllable privacy from the outside world. WIRED reviewer Simon Hill recommends the SmartWings shades as his top picks, and Lutron’s Caseta shades if you’re looking for a more upgraded look.
Invisible Swaps
Looking to add some smarts without touching your existing setup? These switch-ups can make your front door and yard smart without being visible.
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April might be springtime in the northern hemisphere, but some of the best streaming services seem to think it’s the perfect time for a dry run of spooky season. How else to explain the arrival of some exquisitely dark slices of horror, like 28 Days Later: The Bone Temple arriving on Netflix, Weapons coming to Prime Video, or Shelby Oaks landing on Hulu? If you prefer your off-season Halloween viewing to be in the vein of campy B movies rather than serious scares though, horror specialist Shudder has you covered with Deathstalker, a gloriously cheesy reboot of a near-forgotten ’80s series.
Reality is often scarier than fiction though, as shown by Louis Theroux’s Inside the Manosphere—his first documentary film with Netflix, exploring the dark side of social media and the world of toxic male influencers. (Be sure to read our interview with the filmmaker.) And if the thought of that leaves you wanting something a bit more wholesome to watch, thankfully Zootopia 2 has popped up on Disney+—and there’s even a rabbit in that, for some appropriately springtime imagery.
Here are WIRED’s picks of the best movies to watch right now.
28 Years Later: The Bone Temple
The fourth film in the long-running postapocalyptic horror series switches focus from rampaging rage zombies to a more dangerous threat: humans. OK, OK, “people are the real monsters” isn’t a hot take for the genre, but The Bone Temple offers a unique twist, with 28 Years Later survivor Spike (Alfie Williams) trapped in the company of a murderous gang led by deranged satanist “Sir Lord” Jimmy Crystal (Sinners’ Jack O’Connell). The villain is modeled on disgraced British TV presenter Jimmy Savile, whose sexual abuse crimes hadn’t been revealed by the time of the initial outbreak in 28 Days Later, adding a dash of real-world terror.
As the group stalks what remains of the English countryside, Spike’s only hope might be Dr. Ian Kelson (Ralph Fiennes), whose experiments on curing alpha zombie Samson (Chi Lewis-Parry) might hold humanity’s last hope. Although best watched back to back with its predecessor for the full, horrifying picture, director Nia DaCosta’s chapter stands on its own—and earns bonus points for one of the best uses of Iron Maiden’s “Number of the Beast” in film history.
Louis Theroux: Inside the Manosphere
It’s the silence that does the trick; British documentarian Louis Theroux always knows when not to speak and instead let his subject expose themselves for the world to see. It’s a masterful technique whether Theroux is investigating the Westboro Baptist Church or UFO conspiracy theorists, but it is rarely put to better use than in his latest outing: exploring the online “manosphere” subculture of self-appointed “alphas” offering toxic advice on how to be a “real man.” Speaking with key figures in the loosely defined movement, Theroux’s mild-mannered approach often leaves them to do most of the talking, exposing shockingly misogynistic and extremist views. Even more distressing? The quiet revelation that for many of them their performative masculinity is all just one big grift, and how they rationalize the harm they cause in pursuit of a payout. Depressing but compelling viewing—not all men, but definitely all of these men.
Crime 101
Jewel thief Mike (Chris Hemsworth) is the best in the business, a meticulous planner who pulls off his heists without leaving a shred of evidence—much to the consternation of LAPD detective Lou Lubesnick (Mark Ruffalo), who doesn’t even know exactly who he’s hunting for a string of thefts. Elsewhere in the City of Angels, Sharon (Halle Berry) is an underappreciated VP at an insurance firm, frustrated at being passed over for promotion for years. She’s the perfect insider to help Mike orchestrate an elaborate $11 million diamond heist. But as Lou uncovers evidence connecting to Mike’s past, and the chaotic, violent biker Ormon (Barry Keoghan) aims to take the score for himself, even the most masterful planning can’t prevent everything spiraling dangerously out of control.
Kevin Weil, OpenAI’s former chief product officer who was recently tapped to build a new AI workspace for scientists, Prism, is leaving the company, WIRED has confirmed. Weil was previously an early executive leading product at Instagram.
OpenAI is also sunsetting Prism, which the company launched as a web app in January this year to give scientists a better way to work with AI. The company is folding the roughly 10-person team behind it into Thibault Sottiaux’s Codex team. An OpenAI spokesperson confirmed the changes, and tells WIRED this is part of the company’s effort to unify its business and product strategy. OpenAI has broader ambitions to turn Codex, its AI coding application, into an “everything app.”
Weil, who joined OpenAI in June 2024, announced last September that he would be starting a new initiative inside of the company called “OpenAI for Science.” Now, OpenAI is dispersing those employees throughout the company’s product, research, and infrastructure teams. An OpenAI spokesperson reiterated the company’s commitment to accelerating scientific discovery, and says it’s one of the clearest ways AI can benefit humanity.
OpenAI is currently trying to refocus the company around a few key areas, such as enterprise offerings and coding. Last month, OpenAI’s CEO of AGI deployment Fidji Simo told staff that the company needs to simplify its product offerings. The push to divert resources to more consequential efforts resulted in OpenAI discontinuing its Sora video-generation app.
This is a developing story. Please check back for updates.
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