Brilliant scientists have made animal cells glow 1000 times brighter than ever before! Dr Quill guides us through how and why they did it. Mad scientist Barbra Streisand has cloned her dog! But at what cost?! Seriously though, how much does it cost? Dr. Quill investigates. As a large old person, Duncan wants to talk about other large, old things: The history of elephants and the newest addition to the elephant family! Dr. Quill found out about something called a 'bird runway' and says there's very exciting maths involved.