E-bikes and e-scooters will have to slow down across New York City starting Friday, as transportation officials roll out a new 15-mile-per-hour speed limit. The city’s Department of Transportation ...

A movement to help students understand rather than memorize has had sprawling effects, including pushback on teaching methods ...

New York City will roll out a 15 mph speed limit for e-bikes, e-scooters and other pedal-assisted commercial bicycles on Oct. 24, officials said Wednesday. The policy, which matches an existing speed ...

Puzzle 1: You are given nine gold coins that look identical. You are told that one of them is fake, and that this coin weighs ...

Zahi Fayad practices what he preaches. As a professor of radiology and director of the biomedical engineering and imaging institute at Mount Sinai, Fayad is leading a study investigating how our ...

People have been obsessed with cheating death for millennia, but until recently, little had been understood about how to extend life—or if it was even possible. Scientists now say they are getting ...