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Elon Musk’s Neuralink, a medical device company, is under federal investigation for potential animal-welfare violations amid internal staff complaints that its animal testing is being rushed, causing needless suffering and deaths, according to documents reviewed by Reuters and sources familiar with the investigation and company operations.

Neuralink is developing a brain implant it hopes will help paralysed people walk again and cure other neurological ailments. The federal probe, which has not been previously reported, was opened in recent months by the US Department of Agriculture’s Inspector General at the request of a federal prosecutor, according to two sources with knowledge of the investigation. The probe, one of the sources said, focuses on violations of the Animal Welfare Act, which governs how researchers treat and test some animals.

The investigation has come at a time of growing employee dissent about Neuralink’s animal testing, including complaints that pressure from CEO Musk to accelerate development has resulted in botched experiments, according to a Reuters review of dozens of Neuralink documents and interviews with more than 20 current and former employees. Such failed tests have had to be repeated, increasing the number of animals being tested and killed, the employees say. The company documents include previously unreported messages, audio recordings, emails, presentations and reports.

Musk and other Neuralink executives did not respond to requests for comment.

Reuters could not determine the full scope of the federal investigation or whether it involved the same alleged problems with animal testing identified by employees in Reuters interviews. A spokesperson for the USDA inspector general declined to comment. US regulations don’t specify how many animals companies can use for research, and they give significant leeway to scientists to determine when and how to use animals in experiments. Neuralink has passed all USDA inspections of its facilities, regulatory filings show.

In all, the company has killed about 1,500 animals, including more than 280 sheep, pigs and monkeys, following experiments since 2018, according to records reviewed by Reuters and sources with direct knowledge of the company’s animal-testing operations. The sources characterised that figure as a rough estimate because the company does not keep precise records on the number of animals tested and killed. Neuralink has also conducted research using rats and mice.

The total number of animal deaths does not necessarily indicate that Neuralink is violating regulations or standard research practices. Many companies routinely use animals in experiments to advance human health care, and they face financial pressure to quickly bring products to market. The animals are typically killed when experiments are completed, often so they can be examined post-mortem for research purposes.

But current and former Neuralink employees say the number of animal deaths is higher than it needs to be for reasons related to Musk’s demands to speed research. Through company discussions and documents spanning several years, along with employee interviews, Reuters identified four experiments involving 86 pigs and two monkeys that were marred in recent years by human errors. The mistakes weakened the experiments’ research value and required the tests to be repeated, leading to more animals being killed, three of the current and former staffers said. The three people attributed the mistakes to a lack of preparation by a testing staff working in a pressure-cooker environment.

One employee, in a message seen by Reuters, wrote an angry missive earlier this year to colleagues about the need to overhaul how the company organises animal surgeries to prevent “hack jobs.” The rushed schedule, the employee wrote, resulted in under-prepared and over-stressed staffers scrambling to meet deadlines and making last-minute changes before surgeries, raising risks to the animals.

Musk has pushed hard to accelerate Neuralink’s progress, which depends heavily on animal testing, current and former employees said. Earlier this year, the chief executive sent staffers a news article about Swiss researchers who developed an electrical implant that helped a paralyzed man to walk again. “We could enable people to use their hands and walk again in daily life!” he wrote to staff at 6:37 a.m. Pacific Time on Feb. 8. Ten minutes later, he followed up: “In general, we are simply not moving fast enough. It is driving me nuts!”

On several occasions over the years, Musk has told employees to imagine they had a bomb strapped to their heads in an effort to get them to move faster, according to three sources who repeatedly heard the comment. On one occasion a few years ago, Musk told employees he would trigger a “market failure” at Neuralink unless they made more progress, a comment perceived by some employees as a threat to shut down operations, according to a former staffer who heard his comment.

Five people who’ve worked on Neuralink’s animal experiments told Reuters they had raised concerns internally. They said they had advocated for a more traditional testing approach, in which researchers would test one element at a time in an animal study and draw relevant conclusions before moving on to more animal tests. Instead, these people said, Neuralink launches tests in quick succession before fixing issues in earlier tests or drawing complete conclusions. The result: More animals overall are tested and killed, in part because the approach leads to repeated tests.

One former employee who asked management several years ago for more deliberate testing was told by a senior executive it wasn’t possible given Musk’s demands for speed, the employee said. Two people told Reuters they left the company over concerns about animal research.

The problems with Neuralink’s testing have raised questions internally about the quality of the resulting data, three current or former employees said. Such problems could potentially delay the company’s bid to start human trials, which Musk has said the company wants to do within the next six months. They also add to a growing list of headaches for Musk, who is facing criticism of his management of Twitter, which he recently acquired for $44 billion. Musk also continues to run electric carmaker Tesla Inc and rocket company SpaceX.

The US Food and Drug Administration is in charge of reviewing the company’s applications for approval of its medical device and associated trials. The company’s treatment of animals during research, however, is regulated by the USDA under the Animal Welfare Act. The FDA didn’t immediately comment.

Missed deadlines, botched experiments

Musk’s impatience with Neuralink has grown as the company, which launched in 2016, has missed his deadlines on several occasions to win regulatory approval to start clinical trials in humans, according to company documents and interviews with eight current and former employees.

Some Neuralink rivals are having more success. Synchron, which was launched in 2016 and is developing a different implant with less ambitious goals for medical advances, received FDA approval to start human trials in 2021. The company’s device has allowed paralyzed people to text and type by thinking alone. Synchron has also conducted tests on animals, but it has killed only about 80 sheep as part of its research, according to studies of the Synchron implant reviewed by Reuters. Musk approached Synchron about a potential investment, Reuters reported in August.

Synchron declined to comment.

In some ways, Neuralink treats animals quite well compared to other research facilities, employees said in interviews, echoing public statements by Musk and other executives. Company leaders have boasted internally of building a “Monkey Disneyland” in the company’s Austin, Texas facility where lab animals can roam, a former employee said. In the company’s early years, Musk told employees he wanted the monkeys at his San Francisco Bay Area operation to live in a “monkey Taj Mahal,” said a former employee who heard the comment. Another former employee recalled Musk saying he disliked using animals for research but wanted to make sure they were “the happiest animals” while alive.

The animals have fared less well, however, when used in the company’s research, current and former employees say.

The first complaints about the company’s testing involved its initial partnership with University of California, Davis, to conduct the experiments. In February, an animal rights group, the Physicians Committee for Responsible Medicine, filed a complaint with the USDA accusing the Neuralink-UC Davis project of botching surgeries that killed monkeys and publicly released its findings. The group alleged that surgeons used the wrong surgical glue twice, which led to two monkeys suffering and ultimately dying, while other monkeys had different complications from the implants.

The company has acknowledged it killed six monkeys, on the advice of USC Davis veterinary staff, because of health problems caused by experiments. It called the issue with the glue a “complication” from the use of an “FDA-approved product.” In response to a Reuters inquiry, a USC Davis spokesperson shared a previous public statement defending its research with Neuralink and saying it followed all laws and regulations.

A federal prosecutor in the Northern District of California referred the animal rights group’s complaint to the USDA Inspector General, which has since launched a formal probe, according to a source with direct knowledge of the investigation. USDA investigators then inquired about the allegations involving the UC Davis monkey research, according to two sources familiar with the matter and emails and messages reviewed by Reuters.

The probe is concerned with the testing and treatment of animals in Neuralink’s own facilities, one of the sources said, without elaborating. In 2020, Neuralink brought the program in-house, and has since built its extensive facilities in California and Texas.

A spokesperson for the US attorney’s office for the Northern District of California declined to comment.

Delcianna Winders, director of the Animal Law and Policy Institute at the Vermont Law and Graduate School, said it is “very unusual” for the USDA inspector general to investigate animal research facilities. Winders, an animal-testing opponent who has criticised Neuralink, said the inspector general has primarily focused in recent years on dog fighting and cockfighting actions when applying the Animal Welfare Act.

It’s hard on the little piggies

The mistakes leading to unnecessary animal deaths included one instance in 2021, when 25 out of 60 pigs in a study had devices that were the wrong size implanted in their heads, an error that could have been avoided with more preparation, according to a person with knowledge of the situation and company documents and communications reviewed by Reuters.

The mistake raised alarms among Neuralink’s researchers. In May 2021, Viktor Kharazia, a scientist, wrote to colleagues that the mistake could be a “red flag” to FDA reviewers of the study, which the company planned to submit as part of its application to begin human trials. His colleagues agreed, and the experiment was repeated with 36 sheep, according to the person with knowledge of the situation. All the animals, both the pigs and the sheep, were killed after the procedures, the person said.

Kharazia did not comment in response to requests.

On another occasion, staff accidentally implanted Neuralink’s device on the wrong vertebra of two different pigs during two separate surgeries, according to two sources with knowledge of the matter and documents reviewed by Reuters. The incident frustrated several employees who said the mistakes – on two separate occasions – could have easily been avoided by carefully counting the vertebrae before inserting the device.

Company veterinarian Sam Baker advised his colleagues to immediately kill one of the pigs to end her suffering.

“Based on low chance of full recovery … and her current poor psychological well-being, it was decided that euthanasia was the only appropriate course of action,” Baker wrote colleagues about one of the pigs a day after the surgery, adding a broken heart emoji.

Baker did not comment on the incident.

Employees have sometimes pushed back on Musk’s demands to move fast. In a company discussion several months ago, some Neuralink employees protested after a manager said that Musk had encouraged them to do a complex surgery on pigs soon. The employees resisted on the grounds that the surgery’s complexity would lengthen the amount of time the pigs would be under anesthesia, risking their health and recovery. They argued they should first figure out how to cut down the time it would take to do the surgery.

“It’s hard on the little piggies,” one of the employees said, referring to the lengthy period under anesthesia.

In September, the company responded to employee concerns about its animal testing by holding a town hall to explain its processes. It soon after opened up the meetings to staff of its federally-mandated board that reviews the animal experiments.

Neuralink executives have said publicly that the company tests animals only when it has exhausted other research options, but documents and company messages suggest otherwise. During a November 30 presentation the company broadcast on YouTube, for example, Musk said surgeries were used at a later stage of the process to confirm that the device works rather than to test early hypotheses. “We’re extremely careful,” he said, to make sure that testing is “confirmatory, not exploratory,” using animal testing as a last resort after trying other methods.

In October, a month before Musk’s comments, Autumn Sorrells, the head of animal care, ordered employees to scrub “exploration” from study titles retroactively and stop using it in the future.

Sorrells did not comment in response to requests.

Neuralink records reviewed by Reuters contained numerous references over several years to exploratory surgeries, and three people with knowledge of the company’s research strongly rejected the assertion that Neuralink avoids exploratory tests on animals. Company discussions reviewed by Reuters showed several employees expressing concerns about Sorrells’ request to change exploratory study descriptions, saying it would be inaccurate and misleading.

One noted that the request seemed designed to provide “better optics” for Neuralink.

© Thomson Reuters 2022


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NASA’s SPHEREx Mission Sends First Space Images Before Full Sky Survey

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NASA’s SPHEREx Mission Sends First Space Images Before Full Sky Survey

NASA’s SPHEREx mission has sent back its first images from space. This marks an important step before it begins the full survey of the sky. The space telescope, which was launched on March 11, 2025, is designed to scan millions of galaxies and collect data in infrared light. On March 27, its detectors captured uncalibrated images that show thousands of light sources, including distant stars and galaxies. The images, processed with added colours for infrared wavelengths, confirm that SPHEREx is operating as expected. Once fully operational, the telescope will take 600 exposures daily and map the entire sky four times during its two-year mission.

Recorded Images Reveals Interesting Details

According to NASA’s SPHEREx mission, the observatory’s six detectors recorded images of the same area of the sky, providing a wide field of view. The top three images represent one portion of the sky, while the bottom three cover the same section. As per the report, the SPHEREx catpured each image with around 100,000 light sources. As per multiple reports, scientists can now learn more about what celestial objects and its distance from Earth with the help of infrared wavelengths. The data from SPHEREx will also help researchers to explore the origins of water in the Milky Way. Moreover, it might also help the scientists to find more clues about the universe’s earliest moments.

Olivier Doré, SPHEREx project scientist at NASA’s Jet Propulsion Laboratory (JPL) and Caltech, told NASA that the telescope is functioning as intended. The infrared light detected by SPHEREx is invisible to human eyes, but colour mapping enables researchers to visualise and analyse it. The observatory’s unique design includes 17 infrared wavelength bands for each detector, creating a total of 102 hues in every six-image capture.

How the Telescope Works

Unlike Hubble or the James Webb Space Telescope, which focuses on specific areas of space, SPHEREx is built for large-scale surveys. It uses spectroscopy to break down light and identify chemical compositions and distances of celestial bodies. Light entering the telescope is divided into two paths, each leading to three detectors. Specialised filters process the incoming wavelengths, allowing for detailed observations of millions of cosmic sources.

Beth Fabinsky, deputy project manager at JPL, said in NASA’s official statement that the successful image capture represents a major milestone. The telescope has also reached its target operating temperature of minus 350 degrees Fahrenheit, crucial for detecting faint infrared signals. Since focusing cannot be adjusted after launch, mission engineers verified the accuracy of the telescope’s optics before sending it into space.

Jamie Bock, principal investigator at JPL and Caltech, confirmed in NASA’s report that the telescope is performing as expected. Engineers will continue testing before the observatory begins routine operations in late April.

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Iceland’s Grindavík town evacuated as volcanic fissure erupts with lava!

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Iceland’s Grindavík town evacuated as volcanic fissure erupts with lava!

A volcanic fissure has emerged near Grindavík on Iceland’s Reykjanes Peninsula after a series of strong earthquakes. Lava has breached the town’s defence barriers. The Icelandic Meteorological Office (IMO) has warned that the fissure may continue to expand. The eruption began along the Sundhnúkur crater row early in the morning. By 9:45 a.m. local time, a fissure stretching nearly 1,200 metres had opened north of Grindavík. The crack is moving southward. Officials have raised the hazard level to the highest risk category.

Evacuations and Road Closures

According to the IMO, a second fissure has appeared inside Grindavík’s protective barriers. Authorities have evacuated the town along with the Blue Lagoon spa. Roads in and out of the area have been shut. Some residents have refused to leave. Local media outlet Visir has reported that emergency services remain on high alert.

Impact of Volcanic Gas

Weather forecasts indicate that volcanic gas will be carried northeastward towards Reykjavík. The capital is located about 40 kilometres away. The IMO has stated that by tomorrow morning, changing wind patterns may direct the gas southwest and eastward. Residents have been told to remain indoors as much as possible while closely monitoring air quality updates. Reykjanes Peninsula has experienced about 11 eruptions since 2021. Eight have occurred along the Sundhnúkur crater row since last year. Scientists continue to monitor the situation closely. Authorities have urged people to avoid the affected region.

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JWST Captures Unseen Details of Exoplanets in HR 8799 and 51 Eridani Systems

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JWST Captures Unseen Details of Exoplanets in HR 8799 and 51 Eridani Systems

Astronomers have released new images of planets within the HR 8799 and 51 Eridani star systems. The James Webb Space Telescope (JWST) was used in a way that was different from standard procedures to achieve these results. Capturing direct images of exoplanets is challenging due to the brightness of host stars, which often obscures planetary details. To allow more light through, researchers adjusted JWST’s coronagraphs. This helps in enhancing the visibility of these distant worlds. This adjustment provided clearer insights into planetary atmospheres and their compositions.

Unconventional Use of JWST’s Coronagraphs

According to a study published in The Astrophysical Journal Letters, lead author William Balmer, a Ph.D. candidate at Johns Hopkins University, explained to Space.com that a thinner part of the coronagraph mask was used. This allowed more starlight to diffract, reducing the risk of completely obscuring planets. Coronagraphs typically block starlight to reveal faint celestial bodies, but this modification provided a balance between removing excessive glare and preserving planetary details.

Key Discoveries and Observations

The JWST’s mid-infrared imaging captured HR 8799 at 4.6 microns. It is a wavelength that is mainly blocked by Earth’s atmosphere. Balmer stated that previous ground-based attempts had failed, demonstrating JWST’s stability in detecting exoplanets. Observations at 4.3 microns were also conducted. This revealed the presence of carbon dioxide. It is a very important step in determining the planetary formation processes. The detected carbon dioxide levels suggested that these planets likely formed through core accretion, gathering heavy elements over time.

Future Research and Expanding Studies

There are many research planned to study the four additional planetary systems. Balmer’s team has been allocated more JWST observation time to confirm whether similar gas giants formed through core accretion. This could offer more insights into the stability of planetary systems and potential habitability of smaller, unseen planets.

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