Lithium makes up only 0.002% of the Earth's crust, but has become a major component of technology and industry. Find out about the chemical properties of lithium, how those properties allow lithium to be versatile, and which countries are home to the world's largest supply of lithium.

Sheldon finds out that the new chemical elements he helped discover were found because of a mathematical error; he was off by a factor of 10,000. He feels that he is a fraud as a result.

This clip answers the question, "What are atoms made of?" This clip explains the anatomy of an atom.

Phil provides a basic overview of chemicals and explains that they make up everything in the universe. He gives examples of everyday objects that are chemicals and briefly explains the periodic table of elements.

This clip provides a brief history of Helium and its discovery by humans. It mentions the some of the properties of the element and describes its different applications in many industries. It also explains that Helium is a nonrenewable resource.