A senior NHS official is reported to have warned staff about voicing criticism on the rollout of the federated data platform (FDP).
The Download: NASA’s nuclear spacecraft and unveiling our AI 10
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.
NASA is building the first nuclear reactor-powered interplanetary spacecraft. How will it work?
Just before Artemis II began its historic slingshot around the moon, NASA revealed an even grander space travel plan. By the end of 2028, the agency aims to fly a nuclear reactor-powered interplanetary spacecraft to Mars.
A successful mission would herald a new era in spaceflight—and might just give the US the edge in the race against China. But the project remains shrouded in mystery.
MIT Technology Review picked the brains of nuclear power and propulsion experts to find out how the nuclear-powered spacecraft might work. Here’s what we discovered.
—Robin George Andrews
This story is part of MIT Technology Review Explains, our series untangling the complex, messy world of technology to help you understand what’s coming next. You can read more from the series here.
Coming soon: our 10 Things That Matter in AI Right Now
Each year, we compile our 10 Breakthrough Technologies list, featuring our educated predictions for which technologies will change the world. Our 2026 list, however, was harder to wrangle than normal. Why? We had so many worthy AI candidates we couldn’t fit them all in!
That got us thinking: what if we made an entirely new list all about AI? Before we knew it, we had the beginnings of what we’re calling 10 Things That Matter in AI Right Now.
On April 21, we’ll unveil the list on stage at our signature AI conference, EmTech AI, and then publish it online later that day. If you want to be among the first to see it, join us at EmTech AI or become a subscriber to livestream the announcement.
Find out more about the list’s methodology and aims here.
—Niall Firth & Amy Nordrum
MIT Technology Review Narrated: this company is developing gene therapies for muscle growth, erectile dysfunction, and “radical longevity”
In January, a handful of volunteers were injected with two experimental gene therapies as part of an unusual clinical trial. Its long-term goal? To achieve radical human life extension.
The therapies are designed to support muscle growth. The company behind them, Unlimited Bio, also plans to trial similar therapies in the scalp (for baldness) and penis (for erectile dysfunction). But some experts are concerned about the plans.
Find out why the trial has divided opinion.
—Jessica Hamzelou
This is our latest story to be turned into an MIT Technology Review Narrated podcast, which we publish each week on Spotify and Apple Podcasts. Just navigate to MIT Technology Review Narrated on either platform, and follow us to get all our new content as it’s released.
The must-reads
I’ve combed the internet to find you today’s most fun/important/scary/fascinating stories about technology.
1 Google, Microsoft, and Meta track users even when they opt out
According to an independent audit, they may be racking up billions in fines. (404 Media)
+ How our digital devices put our privacy at risk. (Ars Technica)
+ Privacy’s next frontier is AI “memories.” (MIT Technology Review)
2 OpenAI has a new cybersecurity model—and strategy
GPT-5.4-Cyber is designed specifically for defensive cybersecurity work. (Reuters $)
+ OpenAI has joined Anthropic in focusing on cybersecurity recently. (Wired $)
+ Like Anthopic, its latest model is only available to verified testers. (NYT $)
+ AI is already making online crimes easier. It could get much worse. (MIT Technology Review)
3 Amazon is buying satellite firm Globalstar in a bid to rival Starlink
The $11.6 billion deal targets the lucrative satellite internet market. (WSJ $)
+ Apple has chosen Amazon satellites for iPhone. (Ars Technica)
4 What it’s like to live with an experimental brain implant
Early BCI users explain what the technology gives—and takes. (IEEE)
+ A patient with Neuralink got a boost from generative AI. (MIT Technology Review)
5 Dozens of AI disease-prediction models were trained on dubious data
A few might already have been used on patients. (Nature)
6 Uber is breaking from its gig economy model to avoid robotaxi disruption
It’s spending $10 billion to buy thousands of autonomous vehicles. (FT $)
7 xAI is being sued over data center pollution
Musk’s AI venture stands accused by the NAACP of violating the Clean Air Act. (Engadget)
+ No one wants a data center in their backyard. (MIT Technology Review)
8 Apple could win the AI race without running
It may reap the rewards of everyone else’s spending. (Axios)
9 How 4chan set a precedent for AI’s reasoning abilities
The notorious forum tested a feature called “chain of thought.” (The Atlantic $)
10 The surprising emotional toll of wearing Meta’s AI sunglasses
Their shortcomings are making users sad. (NYT $)
Quote of the day
“Everything got a whole lot worse once they rolled out AI.”
—A copywriter tells the Guardian that they’re drowning in “workslop” — AI-generated work that seems polished but has major flaws
One More Thing
GETTY IMAGES
How refrigeration ruined fresh food
Bananas may not be chilled in the grocery store, but they’re the ultimate refrigerated fruit. It’s only thanks to a network of thermal control that they’ve become a global commodity. And that salad bag on the shelf? It’s not just a bag but a highly engineered respiratory apparatus.
According to Nicola Twilley—a contributor to the New Yorker and cohost of the podcast Gastropod—refrigeration has wrecked our food system. Thankfully, there are promising alternative preservation methods.
Read the full story on her research.
—Allison Arieff
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.)
+ Spotify only shows 10 popular songs per artist. This tool lists them all.
+ These GIF animations are mesmerizing loops of nostalgia.
+ This site beautifully visualizes Curiosity’s 13 years on Mars.
+ A retro-futurist designer has turned a NES console into a working synthesizer.
Editorial: Neurodevelopment: parental influences, in utero exposures, and genetics, volume II
Aberrant local and global neural activation patterns in pediatric Prader–Willi syndrome
PurposeAlthough cognitive disorders in children with Prader–Willi syndrome (PWS) are linked to abnormalities in spontaneous neural activation and functional connectivity (FC), the specific neural activation patterns remain uncertain, especially in young children with PWS.MethodsThe current study set out to explore specific local and global neural activation in pediatric PWS using the amplitude of low-frequency fluctuations (ALFF), regional homogeneity (ReHo), and seed-based whole brain FC. Information was gathered from 35 pediatric PWS patients and 33 healthy controls (HC). Both groups’ ALFF and ReHo values were computed, and FC were constructed on the basis of altered ALFF and ReHo regions. The relationships between altered ALFF, ReHo, and FC and the Griffiths Developmental Scales (GDS) of the PWS group were analyzed using partial correlation analysis.ResultsBoth ALFF and ReHo exhibited decreases in occipital lobe, temporal lobe, and cingulate gyrus, and altered ReHo was present in parietal lobe, frontal lobe, and basal ganglia areas. Moreover, ALFF and ReHo also exhibited increases in occipital and temporal lobes. Decreased FC was detected in the visual network (VN), sensorimotor network (SMN), salience network (SAN), and default mode network (DMN). The SMN-, cingulate-, and occipital lobe-related neural activation patterns were significantly positively correlated with the GDS score.ConclusionThe PWS group was characterized mainly by decreased neuronal physiological function and the ReHo was similar to ALFF but more extensive. The decreased local and global brain neural activation patterns may serve as early physiological indicators of cognitive abnormalities.
Brain-gut communication and potential applications of microecological treatments in stroke
Stroke is a cerebrovascular disease with high incidence rates, serious disability and increased mortality rates, thereby posing a serious threat to human health. The mechanisms of brain-gut communication have gradually emerged in recent times. This article focuses on the gut-brain axis and discusses the bidirectional regulatory pathways between gut microecology and stroke via the neurotransmitter, colony metabolite, endocrine, and immunoregulatory pathways. Additionally, it summarizes the latest applications of gut microecological agents in stroke, which may provide new research ideas and clinical treatment strategies for the microecological diagnosis and therapy of stroke.
Reliability of ultra-thin metal films integrated onto embossed and bonded liquid-crystal-polymer (LCP) sheets for neural-interface applications
Liquid crystal polymer (LCP) is increasingly used in flexible implantable bioelectronic devices due to its low moisture uptake, chemical stability, and ability to form robust thermoplastic bonds. However, integrating fine-pitch thin-film metallization into bonded embossed LCP structures presents challenges related to pattern fidelity, bond integrity, alignment accuracy, and long-term electrical reliability, particularly when the metal thickness is small relative to the surface roughness. In this work, we present and characterize a fabrication process for integrating a 500-nm-thick sputtered Cr/Au thin-film metallization onto a 25-μm-thick embossed high-temperature LCP (HT-LCP) substrate, patterned into long (20 cm) and narrow (8 μm) traces using lift-off. Bond integrity between the metallized HT-LCP and a low-temperature LCP (LT-LCP) layer was evaluated using peel testing, while structural and electrical integrity were assessed using NanoCT imaging and resistance measurements. Long-term reliability was evaluated using reactive accelerated aging (RAA) at 87 °C in physiological saline with 10 mM hydrogen peroxide. The results show that the thin metal layer does not degrade bond strength and that embedded traces maintain structural and electrical integrity through bonding and aging. After 12 days of RAA testing, no measurable changes in electrical performance were observed. Electrochemical impedance spectroscopy demonstrated that electrodes coated with a 100-nm sputtered Pt layer exhibited approximately 2 × lower impedance than flat Pt electrodes, attributed to increased surface roughness. Additionally, the bonded LCP structure was thinned from 50 μm to 10 μm using CF4/O2 reactive ion etching with >90% uniformity. These results demonstrate that thin-film metallization integrated into bonded embossed LCP systems can achieve high interconnect density without compromising mechanical or electrical reliability. This work provides practical guidelines for the design of thin, flexible, and durable LCP-based implantable bioelectronic devices.
Early tinnitus burden and subjective hearing are candidate markers of 2-year quality of life after cochlear implantation in single-sided deafness
BackgroundCochlear implantation is a common treatment for adults with single-sided deafness (SSD), but patient-reported benefits vary. The relationships among tinnitus burden, perceived hearing ability, psychological distress, disease-specific health-related quality of life, and whether early postoperative outcomes predict later results are not well understood.ObjectiveThis study explores how disease-specific quality of life relates to tinnitus burden, hearing, stress, depression, and anxiety after cochlear implantation in SSD. It also seeks early markers linked to 2-year outcomes.MethodsThis secondary complete-case analysis was based on a previously reported prospective longitudinal SSD cohort. Of 70 adults with postlingual SSD, 36 (51.4%) had complete Nijmegen Cochlear Implant Questionnaire (NCIQ) data at baseline and at 6 months, 1 year, and 2 years after unilateral cochlear implantation and were included. Additional measures included the Tinnitus Questionnaire (TQ), Oldenburg Inventory (OI), PerceivFed Stress Questionnaire (PSQ), General Depression Scale (ADS-L), Generalized Anxiety Disorder 7-item scale (GAD-7), and Freiburg Monosyllable Test (FMT) at 65 dB. Timepoint-specific correlations with the NCIQ were analyzed using Spearman’s rank correlations. Exploratory multivariable analyses employed linear regression on rank-transformed variables to assess whether baseline and 6-month patient-reported profiles were associated with 2-year NCIQ outcomes. Longitudinal within-patient comparisons were conducted as a secondary descriptive analysis.ResultsHigher NCIQ scores were linked to lower tinnitus burden and better hearing across all assessments. Associations with depression and anxiety persisted, while connections with perceived stress emerged after surgery. At baseline, higher tinnitus burden was associated with lower 2-year NCIQ scores. At 6 months, higher tinnitus is still associated with lower 2-year NCIQ scores, whereas better hearing is associated with higher 2-year NCIQ scores. Early postoperative improvement was followed by stabilization over 2 years.ConclusionImprovement in health-related quality of life after cochlear implantation in adults with SSD is complex and extends beyond hearing alone. Tinnitus was the most consistent negative factor, while improved subjective hearing at 6 months was associated with better outcomes at 2 years. These results support a structured, multidimensional approach to patient-reported follow-up after cochlear implantation in SSD and suggest that early postoperative patient-reported status may serve as an early candidate marker for later quality-of-life outcomes.
Direct and indirect associations of hypochondriasis with suicidality in psychiatric outpatients: mediating roles of anxiety and depression
IntroductionAlthough both hypochondriasis and suicidality are common in psychiatric patients and related to anxiety and depression, their association in psychiatric patients remains unclear. This study investigated the direct association of hypochondriasis with suicidality and the indirect associations via anxiety and depression in psychiatric patients.MethodsClinical records of 5484 psychiatric outpatients were reviewed. Hypochondriasis, Suicidality, Anxiety, and Depression were evaluated using the hypochondriasis item of the Hamilton Depression Rating Scale, the suicidality item of the 17-item Hamilton Depression Rating Scale (HAM-D17), the Hamilton Anxiety Rating Scale (HAM-A), and the 6-item subscale of the Hamilton Depression Rating Scale (HAM-D6), respectively. The associations among Hypochondriasis, Suicidality, Anxiety, and Depression were examined using a parallel mediation model. The model was estimated using the lavaan package in R with 10, 000 bootstrap resamples, adjusted for age and sex. Moderation by age and sex was also investigated.ResultsSignificant positive indirect associations via Anxiety (point estimate = 0.05, 95% CI [0.03, 0.06]) and Depression (point estimate = 0.17, 95% CI [0.15, 0.19]) were observed between Hypochondriasis and Suicidality. Conversely, the direct association between Hypochondriasis and Suicidality was also significant but in a negative direction (B = −0.16, p <.001). As the total indirect association was stronger than the direct association, the total association of Hypochondriasis with Suicidality was significantly positive (B = 0.05, p = 0.002). The negative direct association of Hypochondriasis with Suicidality was significantly stronger in younger patients (interaction term = 0.004, p <.001).ConclusionAnxiety and depression mediated the association between hypochondriasis and increased suicidality. In contrast, hypochondriasis was associated with decreased suicidality after accounting for the mediators. As the indirect association was stronger than the direct association, hypochondriasis was associated with increased suicidality overall. The direct association between hypochondriasis and decreased suicidality was stronger in younger patients.
Gut microbiota profiles in anorexia nervosa: associations with disease severity, BMI, and history of childhood trauma
Study objectivesEmerging evidence suggests a possible link between anorexia nervosa (AN) and alterations in the gut microbiota. This study aimed to characterize the gut microbiota profile in a cohort of Chinese female patients with AN.MethodA comparative analysis of the gut microbiota was conducted between 30 female patients with AN and 30 sex- and age-matched healthy controls (HCs). Fecal samples were collected for 16S rRNA gene sequencing analysis. All participants were assessed using the Eating Disorder Inventory (EDI) and the Childhood Trauma Questionnaire (CTQ). Bioinformatics analysis was performed using QIIME2, and statistical analyses were carried out with SPSS 26.0 and R software. Correlations between microbiota differences and body mass index (BMI), EDI, and CTQ were further investigated.ResultsThe analysis revealed differences in beta diversity and the abundances of specific microbial taxa between the two groups; however, no significant differences were observed in alpha diversity nor in the associations between gut microbiota and BMI, disease severity, or childhood trauma.ConclusionsThis study identified limited differences in the gut microbiota composition between patients with AN and HCs. Critically, no robust associations between gut microbiota and clinical features were found after rigorous multiple comparison correction. While nominal (uncorrected) correlations were observed between the specific microbiota and psychological traits, these results are exploratory and should be considered hypothesis-generating. They highlight a potential avenue for future research but require validation in larger, longitudinal cohorts to determine their reproducibility and biological significance.