23:47
The periodic table
Much more than a list of elements, the periodic table is a snapshot of how matter is organized on Earth and throughout the universe. Divided into five sections, this program looks at the history and components of the periodic table: The History of t...
26:13
Metals
On the periodic table, three-quarters of all the elements are classified as one sort of metal or another. Divided into five sections, this program provides a thorough overview of metals: Metals in Our World (includes iron, lithium, magnesium, mercur...