Season 10, Episode 9 - The Geology Elevation
Aired November 17, 2016
Sheldon struggles with feelings of jealousy when geologist Bert wins a MacArthur Genius fellowship and is celebrated at the university. Meanwhile, Howard finds an old remote control Stephen Hawking toy he made, which receives negative feedback from his friends.
Season 11, Episode 7 - The Geology Methodology
Aired November 9, 2017
When Bert offers Sheldon the chance to work with him to research dark matter, Sheldon is ashamed to be interested in working on a geology project and tries to keep the collaboration a secret.
Meanwhile, Raj gets advice from Penny and Bernadette when Ruchi agrees to go out on a date with him, but wants to keep things casual.