How do cigarettes affect the body?

Cigarettes aren’t good for us. That’s hardly news -- we’ve known about the dangers of smoking for d…

Is fire a solid, a liquid, or a gas?

Sitting around a campfire, you can feel its heat, smell the woody smoke, and hear it crackle. If yo…

How does caffeine keep us awake?

Over 100,000 metric tons of caffeine are consumed around the world every year. That's equivalen…

Hawking's Black Hole Paradox Explained

Scientists work on the boundaries of the unknown, where every new piece of knowledge forms a path i…

Who decides how long a second is?

In 1967, researchers from around the world gathered to answer a long-running scientific question— j…

The Material that could change The World

Thousands of years ago, the Romans invented a material that allowed them to build much of their spr…

A Brief History of Alcohol

A chimpanzee stumbles across a windfall of overripe plums. Many of them have split open, drawing hi…