Throughout her run on Supernatural, Meg enjoyed an interesting character arc. She went from an evil demon that wanted nothing more than to see the death of John Winchester and the corruption of Sam to an antihero that actually worked with the brothers in later years.

Iridium was originally found as a contaminant (with the element osmium) in platinum, and it was from the solid remnants left when platinum was dissolved in a mix of sulphuric and hydrochloric acids that Tennant made his discovery of both elements.

Astatine was discovered by D. Corson and co-workers in 1940 by bombarding a bismuth target with alpha particles. The most stable isotope of this element has a half-life time of only 8.1 hours.