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Research roundup: 7 stories we almost missed

31 May 2025 at 21:37

It's a regrettable reality that there is never time to cover all the interesting scientific stories we come across each month. In the past, we've featured year-end roundups of cool science stories we (almost) missed. This year, we're experimenting with a monthly collection. May's list includes a nifty experiment to make a predicted effect of special relativity visible; a ping-pong playing robot that can return hits with 88 percent accuracy; and the discovery of the rare genetic mutation that makes orange cats orange, among other highlights.

Special relativity made visible

The Terrell-Penrose-Effect: Fast objects appear rotated Credit: TU Wien

Perhaps the most well-known feature of Albert Einstein's special theory of relativity is time dilation and length contraction. In 1959, two physicists predicted another feature of relativistic motion: An object moving near the speed of light should also appear to be rotated. It has not been possible to demonstrate this experimentally, howeverβ€”until now. Physicists at the Vienna University of Technology figured out how to reproduce this rotational effect in the lab using laser pulses and precision cameras, according to a paper published in the journal Communications Physics.

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Β© David Nguyen, Kendrick Cancio and Sangbae Kim

Why Intempus thinks robots should have a human physiological state

25 May 2025 at 14:00
Teddy Warner, 19, has always been interested in robotics. His family was in the industry, and he says he β€œgrew up” working in a machinist shop while in high school. Now Warner is building a robotics company of his own, Intempus, that looks to make robots a bit more human. Intempus is building tech to […]

Last 24 hours: TechCrunch Disrupt 2025 Early Bird Deals will fly away after today

25 May 2025 at 14:00
Just 24 hours left to lock in Early Bird pricing for TechCrunch Disrupt 2025 β€” happening October 27–29 at Moscone West in San Francisco. Save up to $900 on your pass, or bring someone brilliant with you for 90% off their ticket. This deal ends tonight at 11:59 p.m. PT. Grab your Early Bird discount […]

The Tesla bot isn’t superhuman yet, but it can make dinner

21 May 2025 at 06:10
A week ago we saw Tesla’s Optimus robot showing off some nifty dance moves. This week, you can watch it performing a bunch of mundane tasks, though admittedly with a great deal of skill β€” for a humanoid robot. Instructed via natural language prompts, the so-called β€œTesla bot” is shown in a new video dumping […]

Hugging Face releases a 3D-printed robotic arm starting at $100

28 April 2025 at 19:47
Hugging Face, the startup best known for the AI developer platform of the same name, is selling a programmable, 3D-printable robotic arm that can pick up and place objects and perform a few other basic chores. Called the SO-101, the arm is the follow-up to Hugging Face’s previous robotic arm, the SO-100, released last year. […]

Amazon-backed Glacier gets $16M to expand its robot recycling fleet

28 April 2025 at 14:00
The world has a trash problem. The amount of stuff we throw away is expected to nearly double, to 3.8 billion metric tons, by 2050. Reducing what we use would go a long way to addressing the issue, but let’s face it, we’re not very good at buying less either. That leaves recycling, which has […]

RoboBee sticks the landing

16 April 2025 at 18:00
The RoboBee lands on a leaf. Credit: Harvard Microrobotics Laboratory

Several years ago, Harvard University roboticist Robert Wood made headlines when his lab constructed RoboBee, a tiny robot capable of partially untethered flight. Over the years, RoboBee has learned to fly, dive, and hover. The latest improvement: RoboBee has learned how to stick the landing, thanks to biomechanical improvements to its landing gear modeled on the crane fly, which has a similar wingspan and body size to the RoboBee platform. The details of this achievement appear in a new paper published in the journal Science Robotics.

As previously reported, the ultimate goal of the RoboBee initiative is to build a swarm of tiny interconnected robots capable of sustained, untethered flightβ€”a significant technological challenge, given the insect-sized scale, which changes the various forces at play. In 2019, Wood's group announced its achievement of the lightest insect-scale robot so far to have achieved sustained, untethered flightβ€”an improved version called the RoboBee X-Wing. In 2021, Wood's group turned its attention to the biomechanics of the mantis shrimp's knock-out punch andΒ built a tiny robot to mimic that movement.

But RoboBee was not forgotten, with the team focusing this time around on achieving more robust landings. β€œPreviously, if we were to go in for a landing, we’d turn off the vehicle a little bit above the ground and just drop it, and pray that it will land upright and safely,” said co-author Christian Chan, one of Wood's graduate students. The trick is to minimize velocity when approaching a surface and then quickly dissipating impact energy. Even something as small and light as RoboBee can generate significant impact energy. The crane fly has long, jointed appendages that enable them to dampen their landings, so the insect served as a useful model for RoboBee's new landing gear.

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Β© Harvard Microrobotics Laboratory

Fruit flies can be made to act like miniature robots

9 April 2025 at 15:50

Even the tiniest of living things are capable of some amazing forms of locomotion, and some come with highly sophisticated sensor suites and manage to source their energy from the environment. Attempts to approach this sort of flexibility with robotics have taken two forms. One involves making tiny robots modeled on animal behavior. The other involves converting a living creature into a robot. So far, either approach has involved giving up a lot. You're either only implementing a few of life's features in the robot or shutting off most of life's features when taking over an insect.

But a team of researchers at Harvard has recognized that there are some behaviors that are so instinctual that it's possible to induce animals to act as if they were robotic. Or mostly robotic, at leastβ€”the fruit flies the researchers used would occasionally go their own way, despite strong inducements to stay with the program.

Smell the light

The first bit of behavior involved Drosophila's response to moving visual stimuli. If placed in an area where the fly would see a visual pattern that rotates from left to right, the fly will turn to the right in an attempt to keep the pattern stable. This allowed a projector system to "steer" the flies as they walked across an enclosure (despite their names, fruit flies tend to spend a lot of their time walking). By rotating the pattern back and forth, the researchers could steer the flies between two locations in the enclosure with about 94 percent accuracy.

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Β© arlindo71

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