Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Today’s state-of-the-art optical clocks offer accuracy to 18 decimal places, which is roughly equivalent to measuring the ...

Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...

Currently, scientists struggle to forecast volcano eruption events, as no universally reliable, real-time eruption ...

Dr. Briola was always interested in religion, from Roman mythology to Christianity, and was fascinated by the priesthood ...

This story is from Manual, GQ’s flagship newsletter offering useful advice on style, health, and more, four days a week. Sign up here to get it in your inbox. Most runners take pride in detailed ...

Everyone knew that the boom was growing week by week. But how much? From Washington agencies last week came the latest measurements of its growth. ¶ Industrial production in September pushed the ...

We aren’t sure if [Looking Glass Universe] didn’t trust the accepted number for Planck’s constant, or just wanted the experience of measuring it herself. Either way, she took some LEDs and worked out ...

THE clinical manifestations of tetany are striking and include paresthesias, numbness, pain in the distal extremities or periorally, and sensations of tension in the muscles of the hands, feet, face ...