Scientists use ‘negative light’ to send secret messages hidden inside heat

Researchers have developed a technology to invisibly transmit information disguised as background thermal radiation. Using a phenomenon called “negative light,” they transferred 100 kilobits of data per second in a way that was completely undetectable to outside observers. Most methods for concealing data during transfer involve hiding it among other data or encrypting it in…

Read More
Webb Spots Details in Nearby Spiral Galaxy

Webb Spots Details in Nearby Spiral Galaxy

Stars peek through the dusty, winding arms of NGC 5134, a spiral galaxy located 65 million light-years away, in this Feb. 20, 2026, image from NASA’s James Webb Space Telescope. Webb’s Mid-Infrared Instrument collects the mid-infrared light emitted by the warm dust speckled through the galaxy’s clouds, tracing the clumps and strands of dusty gas….

Read More
What State Has the Most Lakes in the U.S.?

What State Has the Most Lakes in the U.S.?

Several states in the Great Lakes region—Ohio, Indiana, Illinois, and Pennsylvania—border the five Great Lakes and contain many inland lakes. The eight Great Lake states (the aforementioned, plus Minnesota, Wisconsin, Michigan, and New York) collectively share the largest freshwater system in the world. The Great Lakes (Superior, Michigan, Huron, Erie, and Ontario) hold about 20…

Read More
Exercise and brain function, hedgehog hearing, and can AI change our minds? – podcast | Science

Exercise and brain function, hedgehog hearing, and can AI change our minds? – podcast | Science

The Guardian’s science editor, Ian Sample, talks to Madeleine Finlay about three eye-catching science stories from the week, including a study that explores the link between exercise and brain health. Also on the agenda: the discovery that hedgehogs can hear high-frequency ultrasound and what this could mean for their conservation, and new research examining how…

Read More