Urban mobility problems demand clarity. Intersections remain the most common sites for crashes, congestion, and violations.

Late at night, stopped at a traffic light, a driver notices lights on all lanes of travel except their own appear to change ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

The speed of light is one of the most fundamental constants in physics, yet it has never been directly measured in one direction. Instead, scientists rely on assumptions built into how time and ...

A McGill University research team has developed a painless, automated way to deliver in vitro fertilization (IVF) hormones ...

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Nancy Redd Shifts in the number of daylight hours — due to changing seasons or ...

Nasha is a Managing Editor for CNET, overseeing our sleep and wellness verticals. She is a nutrition, mental health, fitness and sleep science enthusiast. Her passion for mindful and holistic ...

The evacuation of bulk electrical power over long distances can be done mainly by high voltage alternating current (HVAC) ...