Story archive
Browse SciQuest reporting and explainers in reverse chronological order, with the newest evidence-led stories first.
news Astronomy Evidence status: Peer reviewed · Observational census
A census of 37 nearby dwarf galaxies finds they keep 4% to 25% of the oxygen their stars made, about 11% on average. Where the rest went is still unknown.
news Physics Evidence status: Preprint, not yet peer reviewed
LHCb reports first single-experiment evidence (3.2 sigma, preprint) for the rare B⁰ decay to two muons, matching the Standard Model but short of discovery.
explainer Earth
The Grand Canyon is about 1,524 m (5,000 ft) deep at the South Rim village and up to 1,829 m (6,000 ft) at its deepest, per the National Park Service.
explainer Biology
Cats knead because kittens do it to keep milk flowing, and adults link it to comfort. See what is observed, what is only proposed and what is untested.
news Astronomy Evidence status: Peer reviewed · Statistical analysis of two real events
Two gravitational-wave events and a galaxy catalogue give H0 = 67 (+18/−15) km/s/Mpc, a first for this method, but too imprecise to settle the Hubble tension.
news Anthropology Evidence status: Peer reviewed · Ancient-DNA analysis
Nature studies of 4,587 ancient genomes tie Celtic and Germanic language spread to migrations, but DNA cannot show which language people spoke.
news Anthropology Evidence status: Peer reviewed · Single-site archaeological geochemistry
Oxygen isotopes in 121 limpet shells from Franchthi, Greece, show no clear winter cold snap as farming spread. One site, so the wider question stays open.
news Anthropology Evidence status: Peer reviewed · Laboratory chemical analysis of museum objects
A PNAS study of 24 museum objects, including old mummy medicine, finds conifer resin and aloe traces in ancient Egyptian embalming materials, with clear limits.
news Astronomy Evidence status: Peer reviewed · Observational study
A white dwarf has two separate gas rings. Astronomers propose two surviving planetary bodies, up to Pluto-sized, make the gas. Neither body has been seen.
