Other
Paleogeography and Geologic Evolution of North America
A collection of maps depicting the paleogeography of 550 million years of geologic history.
University of California
Ucmp: Plate Tectonics
Provides hyperlinks to the history behind and the mechanisms driving plate tectonics. Be sure to click on the globe icons for animations of plate tectonics.
PBS
Pbs Learning Media: What's Up With the Weather: Graphs
Examine this graph from FRONTLINE/NOVA: "What's Up with the Weather?" Web site to see dramatic increases in three greenhouse gases over the last two hundred years.
Other
The Paleontology Portal: Fossil Gallery
An image gallery of fossils through time. Students choose a time period to see what life was like by studying the fossils.