The mayor of Kyiv, Ukraine, Vitali Klitschko, is sounding the alarm over the number of soldiers the country can retain as it fights to stave off Russian forces. Klitschko said Ukraine is having “huge ...

BRUSSELS — Ukraine is facing a worsening shortage of soldiers as record numbers of men flee to Europe, Kyiv Mayor Vitali Klitschko warned in an interview. “We have huge problems with soldiers — with ...

What happens when a repair job keeps throwing out new problems? This video documents the honest reality of troubleshooting, showing the new issues we found as we went and the expert steps required to ...

University of North Carolina—Chapel Hill professor Dwayne Dixon has been reinstated after the university placed him on leave on September 29, following reports that Dixon was involved in antifascist ...

The original version of this story appeared in Quanta Magazine. Imagine that someone gives you a list of five numbers: 1, 6, 21, 107, and—wait for it—47,176,870. Can you guess what comes next? If ...

A variation of a puzzle called the “pick-up sticks problem” asks the following question: If I have some number of sticks with random lengths between 0 and 1, what are the chances that no three of ...

At an automobile dealership in Indianapolis on Tuesday, Environmental Protection Agency administrator Lee Zeldin announced plans to rescind the science-backed 2009 determination that greenhouse gas ...

According to two people familiar with the draft, it would eliminate the bedrock scientific finding that greenhouse-gas emissions threaten human life by dangerously warming the planet. By Lisa Friedman ...