Passover is one of the most important Jewish holidays. It begins on April 19 this year.

You can't use a scale, but there's another method for weighing an atom.

Straight men are programmed to love breasts so that they'll play with them during sex, which triggers the woman's maternal bonding circuitry.

Doping is already thought to be widespread among elite athletes, but if doping were legal, many athletes would probably take it to extremes.

A photo series showing a lion being gentle with a baby antelope has been misrepresented as an example of interspecies friendship.

NASA's Voyager 1 spacecraft has met two criteria indicating it has left the solar system, the first manmade object to do so.

Scientists have discovered why the world's most famous food pairings, from wine and cheese to meat sandwiches and a pickle, combine an astringent food with a fatty food.

Scientists have discovered why the world's most famous food pairings, from wine and cheese to meat sandwiches and a pickle, combine an astringent food with a fatty food.

Spit may be the most underrated of all body fluids. Here's what life would like without it.

Excessive Internet use has many of the symptoms of drug addiction. It may soon be classified as a legitimate mental illness.

A daredevil will skydive to Earth from 23 miles up on Oct. 8, achieving supersonic speeds during his freefall. Experts explain the physics of this unprecedented act.

Blind people seem to use sound and touch to generate detailed 3D images of their surroundings. But without colors, what are these images like?

Fall or is it autumn? hasn't always been considered a season, and its relatively new seasonal status is reflected in the ambivalence over its name.

Intellectual disability or mental retardation usually results from random new mutations that arise, not by the inheritance of faulty recessive genes.

There are compelling arguments for and against the authenticity of this important manuscript. The answer may - or may not - come down to chemistry.