How long has Earth been around? How did the planet form? What is it made of? And how in the world do scientists begin to investigate the history of the planet? So many questions. This video has got answers! Topics include: Earth's Origins, Matter, Material and Rocks, and Clues to Earth's Past.

Originally released by Cerebellum Corporation, 2013. Streaming video file encoded with permission for digital streaming by Infobase on July 10, 2018.

Earth Origins (0:47); --Geologic Time (4:18); -- Matter, Minerals, and Rocks (10:27); -- Clues to Earth's Past (1:18); -- Radioactive Dating (3:32); -- Fossils and the Law of Superposition (6:35); -- Distribution of Organisms (1:28); -- Credits: Investigating Earth's Past (0:34); .