A global surveillance network built to hear what no nation can hide: the unmistakable signature of a nuclear explosion, ...

Earth has a centre of mass, but it is not a point permanently fixed inside the rock. Water, air and snow move across the planet through the seasons. Because they have mass, those migrations move the ...

Fine filaments and root hairs in topsoil. Arbuscular mycorrhizal hyphae themselves are far thinner — 10 to 50 times narrower than a human hair. It would also stretch a little over a tenth of the way ...

Two and a bit tonnes of snapped rock, stacked into neat circles, in a chamber that has never once seen daylight. Nobody has worked out why. Bruniquel Cave sits above the Aveyron gorges in the ...

A registered beefalo, the bison-cattle breed at the centre of the study. Credit: Karl Young, CC BY-SA 3.0, via Wikimedia Commons. A bull called Joe’s Pride changed hands in 1975 for $2.5 million. His ...

Cyanobacteria bloom in a shallow Michigan lake during the fall of 2024. Photo by Leon Katona. Public domain (USGS). In the summer of 2024, a small lake in the Upper Peninsula of Michigan was ...

Giant sunspot on the solar disk imaged by NASA's Solar Dynamics Observatory on 24 October 2014 — thematic full-disk sunspot imagery. Credit: NASA/SDO, public domain. That number matters because of ...

A Venera 13 panorama of the surface of Venus, prepared for NASA by the Lunar and Planetary Institute. Credit: Venera 13/Soviet space programme; Lunar and Planetary Institute/NASA; source and licence.

Placing concrete in a block at the mid-section of the dam, an eight-cubic-yard bucket handled by an overhead cableway. Bureau of Reclamation photograph via the US National Archives (NARA 293921), ...

Saturn’s rings look like they have always been there. Every photo of the solar system puts them front and center, thin gold bands wrapped around a giant planet, and it is easy to assume they arrived ...

Bar soap moved a lighthouse. Crews smeared ordinary Ivory soap along the steel beams the tower rode across, because it turned out to be the ideal lubricant for a job involving thousands of tons of ...

Eastern bluebird pair preparing a nest in a nest box on the campus of the U.S. Fish and Wildlife Service's National Conservation Training Center. Credit: Rachel E. Molenda / USFWS (public domain).