Dr. Sensible, Prof. Small, and Junior investigate Mark's nose and explore germs, how digestion works, and Louis Pasteur's legacy.

What happens to our bodies in space? Can we live on other planets? Who invented the telescope and how can we make one at home? Mark receives a letter from the head of the channel saying that he is going to be sacked if anything else goes wrong on the show! Lucy, Bob and Professor McTaggart try and make sure they for once everything goes smoothly.

Lucy's script mistake made everyone think the show is about elephants, which is a huge problem, with scientist Marie Curie as their guest.

Lucy and Mark bring their favorite plants. When Mark's plant starts to die, plant expert Theophrastus steps in to explain what's happening.

Join us as we explore how the brain functions, questioning unconventional methods to enhance intelligence.

The Shrinking Scientists investigate what's causing Mark's itching. Microscope expert Robert Hooke joins them in the studio.