A single-dose bacterium eradicates tumors in mice

The breakthroughs include a seawater-degradable plastic and longer-lasting electric batteries.

Elena Rodriguez

Key Highlights

  • A single-dose bacterium eliminated colorectal tumors in mice in preclinical tests.
  • A lithium-ion additive halved cathode capacity decay per cycle, extending battery life.
  • Sleep disorders affect 83% of autistic children and adolescents, worsening symptoms.

This week on r/science, biological ingenuity and materials pragmatism converged with social science recalibration. From microbes and insects inspiring new therapies to incremental breakthroughs in plastics and batteries, the community weighed tangible progress alongside evolving perceptions of our digital lives.

Living systems reshaping medicine

Biology-led solutions dominated, with a frog-derived bacterium that eliminated colorectal tumors in mice with a single dose anchoring optimism around organism-inspired therapeutics. Metabolic health entered the frame as a single gut microbe prevented high-fat diet weight gain in mice, while entomology pointed toward a new antibiotic playbook through the discovery that common ants deploy diverse antimicrobials effective against Candida auris.

"I've seen enough, give me the bug...." - u/Mister_Oux (1554 points)

Neuroscience extended this arc from cellular to circuit-level resets, as MIT researchers demonstrated that transient retinal anesthesia can reboot adult amblyopic vision in mice. Clinicians and caregivers also highlighted developmental realities, with evidence that sleep disorders affect 83% of autistic children and adolescents, intensifying symptom severity and underscoring the need for scalable, neuroinformed interventions.

Materials and energy: incremental breakthroughs with outsized impact

Practical sustainability took center stage as a cellulose-based material fully degraded in seawater without microplastics, signaling pathways to transparent, durable, plant-derived plastics. In parallel, electrochemistry delivered an efficiency lever for EVs, with a tiny additive that halved lithium-ion cathode capacity decay per cycle, pointing to longer-lived high-energy batteries.

"Sounds great, hope it gets developed! Now please give me good news concerning getting rid of all the microplastics already present everywhere. I'd like to die of normal causes, not because my brain got too full of plastic...." - u/JHMfield (4093 points)

Taken together, these advances move infrastructure toward circularity and durability—scaling abundantly sourced cellulose while fine-tuning cathode stability—yet community reactions emphasized supply-chain realities, deployment timelines, and the urgency of remediation for legacy pollution.

Recalibrating perceptions in the digital age

Social science work challenged prevailing narratives about online behavior, as researchers showed how a loud minority inflates perceived internet toxicity. Complementary survey data revealed that more tech-savvy and educated users report greater concern over privacy, misinformation, and work-life balance—an awareness effect that may heighten perceived risk even as skills improve.

"Most people don't comment at all. Vocal minorities control Internet culture." - u/VideoPup (2114 points)

Institutional contexts tempered the picture: rigorous field audits indicated no evidence of administrative discrimination against conservative student organizations, suggesting bureaucratic norms can preserve equity amid polarized expectations and reminding the community that perception and process often diverge.

Data reveals patterns across all communities. - Dr. Elena Rodriguez

Related Articles

Sources

TitleUser
Frog gut bacterium eliminates cancer tumors in mice with a single dose: Single shot of E. americana intravenously to mice with colorectal cancer completely eliminated tumors in every treated animal, with ongoing protection. When mice were later re-exposed to cancer cells, none developed new tumors.
12/17/2025
u/mvea
32,590 pts
Scientists may have developed perfect plastic: Plant-based, fully saltwater degradable, zero microplastics. Made from plant cellulose, the worlds most abundant organic compound. Unlike other biodegradable plastics, this quickly degrades in salt water without leaving any microplastics behind.
12/16/2025
u/mvea
22,470 pts
A loud minority makes the internet seem more toxic than it is. A small group of active users generates most hostility, while the majority remain civil. This imbalance leads many Americans to assume the worst about one another. Correcting that misperception can improve how people feel about society.
12/18/2025
u/Sciantifa
17,983 pts
The more tech savvy you are, and if you are a millennial or are more educated, the more digital concerns you have over privacy, misinformation, and work-life balance in the digital age, finds a new study of nearly 50,000 people in 30 countries.
12/15/2025
u/mvea
11,633 pts
Scientists find a way to 'reboot' vision in adults with lazy eye A new mouse study shows that briefly and reversibly anesthetizing the retina of the amblyopic eye for just a few days can restore the brain's visual responses to that eye, even in adults.
12/19/2025
u/No-Explanation-46
9,286 pts
Weight gain prevented by a single gut microbe that prevent fat gain, even with a high-fat diet. In new study, mice that were fed a high-fat diet and were also given Turicibacter saw reduced blood sugar, lower levels of fat in the blood, and less overall weight gain compared to a control group.
12/18/2025
u/mvea
8,822 pts
83% of autistic children and adolescents suffer from life-disruptive sleep disorders including difficulty falling asleep, night walking, night terrors, movement during sleep, and reduced sleep duration, which exacerbate autistic symptom severity, in a peer-reviewed systematic review
12/17/2025
u/sometimeshiny
8,468 pts
A large-scale audit study (involving nearly 1,500 university administrators) finds no evidence that administrators discriminate against conservative students who want to set up conservative student organizations or secure campus space for guest speakers.
12/20/2025
u/smurfyjenkins
7,875 pts
Ants may be ahead of humans in antibiotic innovation. Ants produce multiple classes of antimicrobials specific to different pathogens: fungi, gram-negative and gram-positive bacteria. Nearly all ant species tested had extracts that were highly effective against a human superbug Candida auris.
12/19/2025
u/mvea
7,846 pts
Researchers have found a way to considerably boost the lifespan of lithium-ion batteries for EVs and other uses. Adding a mere 0.5 mole percent of tantalum oxide to the cathode material slashes the rate of capacity decay per cycle in half, paving the way for more durable, high-energy batteries.
12/16/2025
u/Skoltech_
7,750 pts