We conclude our history of the periodic table by discussing recent developments. Visit: elementsunearthed.com to find out more. We interviewed Dr. Eric Scerri of UCLA, a noted expert on the periodic table, and in this section he discusses how the discoveries of modern physics such as subatomic particles and quantum mechanics helped us to understand the structure of the periodic table and the properties of the elements. He also discusses whether the periodic table can be derived solely from quantum mechanics and some of the anomalies that remain to be solved, such as the disputed placement of hydrogen and helium in the periodic table and the mysterious Knight's Move pattern. We also discuss various formats of periodic tables from the notes of Edward G. Mazurs, who wrote books in 1957 and 1974 titled: "Graphic Representations of the Periodic System During 100 Years." The video editing, writing, narration, photography, and animations were created by David V. Black. For more information about The Elements Unearthed Project, go to our blog at: elementsunearthed.com or e-mail David at: firstname.lastname@example.org.