Google Earth is host to some odd images, if you know where to look for them.

The Cambrian sea was a very strange and alien place ... set the stage for all animal life on Earth, including us. Watch First Animals on The Nature of Things.

A weird "quasi-moon" of Earth is about to get a name — and you can be part of the process. That 500-foot-wide (150 meters) space rock is one of our planet's quasi-moons — a temporary companion ...

And there are a lot of strange things about these fish ... Narrator: The Mariana Trench is the deepest point on Earth. So deep that if you dropped Mount Everest inside, its peak would still ...