Story archive
Browse SciQuest reporting and explainers in reverse chronological order, with the newest evidence-led stories first.
news Anthropology Evidence status: Peer reviewed · Archaeological site study
Rock moulds at Spain's Abric Romaní preserve 13 wooden objects Neanderthals made or used, including a 2.45 m spear and a possible club. Here's what's uncertain.
explainer Physics
A click (klick) is military slang for one kilometre: 1,000 m, about 0.62 miles. See conversions, why 1 km Army map grids made it useful, and its origin.
news Biology Evidence status: Peer reviewed · Single fossil specimen
A 165-million-year-old swimming relative of mammals kept throat bones like ours. What the Nature fossil shows, how, and why it rests on a single skeleton.
news Biology Evidence status: Peer reviewed · Genomics study (embryos and tissues)
A Nature Communications study maps how DNA folds in squid, cuttlefish and octopus: stable domains, shifting loops, and one switch deletion that shrank brains.
explainer Physics
An atomic clock steers an oscillator to caesium-133 atoms and counts 9,192,631,770 cycles per second. How it works, how accurate it is and why GPS needs one.
news Physics Evidence status: Peer reviewed · Laboratory experiment
A thorium-229 nuclear clock in Vienna locked its laser to nuclei for a day. What it achieved, how it compares with atomic clocks, and what it can't do yet.
explainer Astronomy
How long does it take to get to Mars? About 7 to 10 months. See NASA mission travel times, the Hohmann transfer math, launch windows and crewed trip estimates.
news Biology Evidence status: Peer reviewed; observational study of pet dogs
A Science study of 894 pet dogs links faster DNA-methylation ageing to large size and male sex. What it found, how, and why it doesn't yet prove a cause.
news Biology Evidence status: Mouse study · Peer reviewed
A mouse study maps a lymphatic route that drains fluid from the back of the eye to a neck lymph node in 20 minutes. What it may mean for glaucoma.
