We opened our discussion with a talk about the human psychology of humans preferring addition over subtraction, as well as the impact of ancient meteors on modern jungles and fossil finds. After break we talked about the endless mysteries of dark matter and the role of LED lighting in the growth of a specific micro-algae. We wrapped up the show with a mention of ancient humans and their brain sizes after leaving Africa, many years ago, ultimately reflecting on the development of brain sizes compared to apes.