A “beautiful effect” predicted by quantum electrodynamics (QED) can explain the puzzling first observations of polarized Xrays emitted by a magnetar – a neutron star featuring a powerful magnetic field, according to a Cornell astrophysicist.

The extremely dense and hot remnant of a massive star, boasting a magnetic field 100 trillion times str...

Deep sleep, also known as non-REM slow-wave sleep, can act as a ‘cognitive reserve factor’ that may increase resilience against brain protein beta-amyloid that is linked to memory loss caused by dementia.

Disrupted sleep has previously been associated with faster accumulation of beta-amyloid protein in the brain...

Sweat is more than just a sign of a good workout. It holds vital information about our health, providing clues to dehydration, fatigue, blood sugar levels and even serious conditions such as cystic fibrosis, diabetes and heart failure. Researchers at the University of Hawaii at Manoa College of Engineering have taken a giant leap forward in sweat analysis with an innovative 3D-printed wearable sweat sensor called the “sweatainer.”

Harnessing the power of additive manufacturing (3D-printing), the researchers have developed a new type of wearable sweat sensor that expands the capability of wearable sweat devices. The sweatainer is a small, wearable device similar in size to a child’s sticker that collects and analyzes sweat, offering a glimpse into the future of health monitoring...

Make the most of these two teachable moments by planning ahead and spreading the word. This year and next, Americans will have the extraordinary opportunity to witness two solar eclipses as both will be visible throughout the continental U.S. On Oct. 14, 2023, the moon will obscure all but a small annulus of the sun, producing a “Ring of Fire” eclipse. On April 8, 2024, the eclipse will be total in a band stretching from Texas to Maine.

Both occurrences promise to be remarkable events and teachable moments. But preparation is essential.

In The Physics Teacher, co-published by AIP Publishing and the American Association of Physics Teachers, astronomer Douglas Duncan of the University of Colorado provides a practical playbook to help teachers, students, and the g...