This fascinating and graphically striking website maps historical articles on Wikipedia onto a timeline. Viewers can confine themselves to the tiny span of Earth's history that features the human race, or zoom out to the unimaginable expanses of geological time. Incredibly, the project was put together by (very smart) college students.
“The viewer can choose to watch a variety of events which have happened in a particular period or to target a specific event in time. For example you can look at the past century within the categories of war and inventions.”