Different versions of the same basic genes cause the physical differences between one person and another--eye color, height and the risk of getting sick.

FORBES: On The Cover/Top Stories

These chromosomes contain genes, which carry instructions that determine everything from your height to your eye color.

CNN: Triple X syndrome

Sunday's eye-catching event occurred at the height of the annual Lyrid meteor shower, which happens every April as Earth plows through the dust and debris trailing a comet called Thatcher.

WSJ: Meteor Creates a Show, No Apparent Damage