Meeri Kim

Medical researchers are starting to come around to the idea that becoming engrossed in the virtual world of a video game may have value beyond pure fun.

Researchers have discovered that playing 3-D video games - those that immerse the player in a three-dimensional world with a more true-to-life, first-person perspective - may boost memory and stimulate the brain.

A classic symbol of winter's chill, rows of icicles hanging dramatically off roofs and trees show off the simple artistry of nature. But there's more to them than their fleeting beauty: Icicles are one of the unsolved mysteries of physics.

All animals with four limbs -- reptiles, birds, amphibians and even humans -- descended from common ancestors that made that initial transition from fins to feet. But how and why this evolutionary leap occurred has long been a scientific puzzle.

A jumping insect has gears, scientists discovered, a rare instance in which man and nature independently converged on the same idea.

An Austrian collector has found what may be the oldest globe, dated 1504, to depict the New World, engraved with immaculate detail on two conjoined halves of ostrich eggs.

Scientists have long wondered why a small minority of mammals, including humans, have evolved into monogamous creatures, and two studies provide new information but give different answers.