NatureScene video in which students learn about the North Dakota Badlands, its geologic history, and how it has been shaped by erosion. [4:07]

This lesson provides a timeline of fossils while also discussing the different types, locations, and geology of various fossils. [4:13]

LeBron James asks Sal about how long humanity has been around as compared to the history of the Earth. [8:08]

With this resource, users learn how rocks from millions of years ago give evidence of the emergence of oxygen in Earth's atmosphere. Make the connection between this evidence and the presence of complex animal life on our planet. [28:27]