Share on Pinterest To prevent a second heart attack, replace 30 minutes’ sitting time with exercise, a new study suggests. Image credit: Maskot/Getty Images. About one in five people who have ...

Quantum physicists are familiar with wonky, seemingly nonsensical phenomena: atoms and molecules sometimes act as particles, sometimes as waves; particles can be connected to one another by a “spooky ...

Americans spend an average of six hours and 40 minutes a day staring at the screens of their computers, phones, and other electronic devices. If that sounds like a lot, it is, but it’s only two ...

Researchers found children with highly addictive use of phones, video games or social media were two to three times as likely to have thoughts of suicide or to harm themselves. By Ellen Barry As ...

Based on Einstein's theory, they demonstrated that if a massive object rotates rapidly, it drags space-time along with it.