Science & Tech

Human Warming Reversed 2,000 Years of Growth at Barnes Ice Cap Around 1960, Study Finds

A Science study finds human-caused warming reversed 2,000 years of growth at Baffin Island’s Barnes Ice Cap around 1960, overpowering natural cooling.

#climate, #paleoclimate, #glaciers, #arctic

Super-Kamiokande reports 2.6σ hint of diffuse supernova neutrino background

Super-Kamiokande posts a 2.6σ hint of the diffuse supernova neutrino background — the strongest experimental indication yet, but not a discovery.

#science, #neutrinos, #astronomy, #supernova

Wuhan–Shanghai optical-clock comparison hits 2.18×10^-18, meeting SI-second roadmap threshold

A China team measured a Yb/Sr frequency ratio over 1,350 km with 2.18×10^-18 uncertainty, meeting a key roadmap threshold for redefining the second.

#metrology, #opticalclocks, #precisionmeasurement, #china

Researchers estimate 50,391 heat-related deaths across 30 European countries in summer 2026

Researchers estimate heat caused about 50,391 deaths across 854 European cities in summer 2026; roughly two-thirds tied to human-caused warming.

#climatechange, #heatwave, #publichealth, #europe

Study: Proposed 1‑Million‑Satellite Orbital Data Centers Could Severely Disrupt Vera C. Rubin Observatory

An arXiv simulation finds a proposed ~1M‑satellite orbital data‑center constellation could contaminate large shares of the Rubin Observatory's planned sky survey.

#astronomy, #satellites, #rubinobservatory, #lsst

JWST preprint finds shallower faint‑end at z≈7.4 and a power‑law UV luminosity function at z≈10

A JWST preprint analyzing four years of NIRCam imaging finds a shallower faint-end UV galaxy count at z≈7.4 and a power-law luminosity function at z≈10.

#jwst, #galaxies, #reionization, #astronomy

JWST data reveal candidate broad-line AGN at z ≈ 10, offering tentative virial black hole mass

A new arXiv preprint finds a candidate broad-line AGN at z=9.9837 in JWST spectra, enabling a tentative virial black hole mass estimate if confirmed.

#jwst, #agn, #blackholes, #highredshift

UNEP: Chance of Keeping Warming Below 1.5°C Without Overshoot Is Gone

UNEP's Emissions Gap Report 2026 says the world has lost the chance to keep warming under 1.5°C without overshoot; best-case paths point to ~2.1°C.

#climate, #unep, #globalwarming, #emissions

Satellite Analysis Suggests Nitrogen Oxide Emissions at Southaven Turbine Field Far Above Permit Levels

NASA TEMPO analysis estimates NOx emissions from Southaven turbines serving xAI’s Colossus 2 averaged far above the site's permit levels.

#airpollution, #nox, #tempo, #xai

Japan Launches MMX Probe to Study Mars' Moons, Seeks Phobos Sample Return

JAXA launched the MMX spacecraft from Tanegashima on Oct. 20 JST to study Phobos and Deimos and attempt the first sample return from the Martian moons.

#space, #jaxa, #mars, #phobos

JWST lensed-quasar survey hints at self-interacting dark matter on small scales

JWST analysis of 29 quadruply imaged quasars shows a population-level preference for self-interacting dark matter over CDM at small scales; tentative preprint result.

#astrophysics, #darkmatter, #jwst, #gravitationallensing

Preprint finds probabilistic AI models outperform ECMWF ensemble on record-breaking heat extremes

An arXiv preprint shows probabilistic AI forecasting systems outperformed ECMWF's ensemble — including on record-breaking heat — when evaluated probabilistically.

#ai, #weather, #heatwaves, #forecasting

Fermi Releases Most Sensitive Low‑Energy Gamma‑Ray Catalog, Identifying 60 New Sources

Fermi-LAT's 2FLE catalog lists 450 sources between 20–200 MeV, including 60 previously unseen gamma-ray sources, helping close the MeV gap.

#astronomy, #gammarays, #fermilat, #astrophysics

TDCOSMO measures H0 at 71.1 km/s/Mpc with 3.3% uncertainty using strong lensing and JWST kinematics

TDCOSMO uses time-delay lensing and resolved stellar kinematics (including JWST) to measure H0 = 71.1 km/s/Mpc ±3.3%, an independent late‑Universe check.

#cosmology, #hubbleconstant, #stronglensing, #jwst

China’s R&D Spending Matches U.S. on PPP Measure, But Gaps Remain in Basic Science

OECD data show China matched the U.S. in total R&D spending on a PPP basis in 2024, yet gaps remain in basic research and research integrity.

#china, #science, #research, #rnd, #innovation