Thursday 24 September 2026 · Edition of the day

The Skeptic's Daily

The day's biggest stories, taken apart. For each one: what is actually established, what is only asserted, the questions worth asking — and a plausibility score for the central claim, given everything currently known.

Stories: 7
Average plausibility: 75%
How to read the score: It rates how well the core claim is evidenced — not how important the story is, nor whether it is good or bad news.

RegionAll Global Africa North America South America Asia-Pacific Europe Middle East

TopicAll Politics Conflict & Security Business Science Health

01ScienceGlobal

Astronomers identify the youngest known exoplanet, still forming in its birth disk

A planet under a million years old challenges existing models of how giant planets form.

A team led by researchers in Chile reported the discovery of Elias 2-24 b, described as the youngest confirmed exoplanet, using archival Keck Observatory data. The findings were published in The Astrophysical Journal Letters. The Jupiter-mass planet appears to be actively accreting material from its host star's disk, complicating formation models that already struggled with previous record-holders around 5 million years old.

What holds up

✓Publication in The Astrophysical Journal Letters is confirmed via NASA Science's release.
✓The data came from the W. M. Keck Observatory.

What doesn't yet

?The age estimate relies on modeling assumptions the researchers acknowledge are imperfect.
?Whether the object is a fully formed planet or a protoplanetary clump is still debated.

Ask before you share

→Will independent teams replicate the age estimate with different instruments?
→Does this favor core-accretion or disk-instability theories of planet formation?
→Could similar young planets be found around the other stars in the survey?

Sources & original reporting

[1]NASA Science · Accessed 24 Sept 2026 · science.nasa.gov

02ScienceGlobal

Perseverance finds evidence of repeated water activity in Martian rock

Rocks in Jezero Crater's 'Margin Unit' appear to have interacted with water on at least three separate occasions.

NASA scientists reported on 21 September 2026 that data from the Perseverance rover's SuperCam instrument show an unexpectedly complex water history in Jezero Crater's Margin Unit. Researchers expected sedimentary rock but found igneous rock bearing chemical signatures of multiple encounters with water. The findings were published in Communications Earth & Environment.

What holds up

✓The instrument readings and publication venue are confirmed by NASA's official release.
✓The rover reached the Margin Unit in September 2023, a documented mission milestone.

What doesn't yet

?Reading the record as three 'separate' episodes rather than one prolonged process is inference from indirect chemical data.
?Implications for past habitability extrapolate beyond the direct findings.

Ask before you share

→Could a sample-return mission confirm this with laboratory analysis on Earth?
→What does this mean for Jezero's potential to preserve signs of past life?
→Are similar formations present elsewhere on Mars?

Sources & original reporting

[1]NASA · Accessed 24 Sept 2026 · nasa.gov

03ScienceAfrica

New colobus monkey species described in DR Congo's rainforest

Likweli, a colobus monkey with distinctive orange lips, has been described as new to science.

A research team including Junior Amboko and anthropologist Kate Detwiler described a new monkey species, Likweli, in DR Congo's rainforest, combining genetic, anatomical and acoustic analysis. Researchers say its lineage split from Colobus satanas roughly four to five million years ago.

What holds up

✓The species has been named and described by a named research team.
✓Genetic analysis distinguishes it from the closely related Colobus satanas.

What doesn't yet

?The divergence date depends on molecular-clock assumptions not detailed in the report.
?The claim that only five new African monkeys have been described in 75 years comes from the researchers themselves.

Ask before you share

→Has the description passed independent peer review?
→How large is the population, and is it threatened?
→How is habitat loss affecting its range?

Sources & original reporting

[1]Breaking Kenya News · Published 23 Sept 2026 · breakingkenyanews.com

04ScienceAsia-Pacific

Singapore team builds the world's most accurate atomic clock using lutetium

A lutetium-ion optical clock at NUS reports the lowest systematic uncertainty ever recorded, published in Nature.

A team led by Murray Barrett at NUS's Center for Quantum Technologies published results in Nature on 23 September 2026 describing a lutetium-ion clock with systematic uncertainty of about 1×10⁻¹⁹, surpassing a 2025 NIST record of 5.5×10⁻¹⁹.

What holds up

✓Published in a peer-reviewed Nature paper.
✓The reported uncertainty improves on the previous NIST record.

What doesn't yet

?Describing NUS as uniquely capable reflects current research concentration, not a verified monopoly.
?Future uses, such as redefining the second, are speculative.

Ask before you share

→Can other labs replicate the technique soon?
→Which practical applications benefit first?
→How does it feed into redefining the SI second?

Sources & original reporting

[1]Tech Times · Published 24 Sept 2026 · techtimes.com

05ScienceNorth America

Bird flu strain circulated undetected for months in North America, study finds

A surveillance gap let the D1.1 H5N1 variant spread unnoticed before its first confirmed detection.

A study led by Arizona State University's Matthew Scotch, with the Arizona Game and Fish Department, compared Arizona H5N1 D1.1 sequences with thousands of public samples. It concluded the lineage likely began expanding around summer 2024, months before its first recognized US detection. D1.1 has infected humans, including a fatal case in Louisiana in early 2025.

What holds up

✓The study was carried out by ASU with the state wildlife department.
✓D1.1 is a variant of the H5N1 clade driving the global outbreak.

What doesn't yet

?The start date and origin of hidden spread are inferred from genetic modeling.
?Whether this reflects an ongoing national surveillance failure is the authors' assertion.

Ask before you share

→How much of the wild bird population goes unsampled?
→What surveillance changes are planned before the next migration?
→What does this imply about current risk to humans?

Sources & original reporting

[1]ASU News · Published 23 Sept 2026 · news.asu.edu

06ScienceEurope

Researchers map a parasite's key molecular machine in near-atomic detail

A Liège-led study reveals how parasites behind sleeping sickness and Chagas disease process genetic material.

Scientists from the University of Liège and Rockefeller University published in Nature Communications the 3D structure of the trans-spliceosome in trypanosomatid parasites, which cause sleeping sickness, Chagas disease and leishmaniasis. They say it clarifies a mechanism poorly understood for nearly 40 years.

What holds up

✓Published in Nature Communications, led by Liège researchers.
✓These parasites are established causes of the three diseases.

What doesn't yet

?New treatments are an anticipated application, not a demonstrated one.
?The '40-year mystery' is the researchers' framing.

Ask before you share

→How far is this from a testable drug candidate?
→Does the mechanism vary across parasite species?
→Who will fund treatments for affected, mostly low-income regions?

Sources & original reporting

[1]Phys.org / University of Liège · Published 23 Sept 2026 · phys.org

07ScienceMiddle East

Israeli researchers use computer design to boost cancer-fighting immune cells

An engineered T-cell receptor showed stronger tumour-killing in mice.

Bar-Ilan University and Weizmann Institute researchers published in Science Advances a computationally designed T-cell receptor, SET. Engineered cells showed stronger cancer-killing in the lab, and in mice with human tumours, treated tumours were about 35% smaller after 83 days.

What holds up

✓Published in Science Advances by Cyrille Cohen's team with Weizmann collaborators.
✓Results come from lab and mouse experiments.

What doesn't yet

?Mouse results may not translate to humans; no clinical trials yet.
?The 35% figure has not been independently replicated.

Ask before you share

→What safety risks come with re-engineered receptors?
→How does it compare with approved CAR-T and TCR therapies?
→What is the realistic path to human trials?

Sources & original reporting

[1]EurekAlert! / Bar-Ilan University · Published 23 Sept 2026 · sciencesources.eurekalert.org