Khan Academy
Khan Academy: Earth Formation: History of Life on Earth
An illustration of the development of the planet Earth as a result of a supernova tens of millions of years ago. [10:08]
NPR: National Public Radio
Npr Videos: Skunk Bear: Earth's Entire History (Visualized on a Football Field)
We use the yard lines to map out our planet's past (and humanity's tiny moment in it). [4:38]