Harrison learns how people grow, why they stop, and how to calculate estimated height.
Two children compete to match the picture of a baby animal to its parent.
Soft bodied invertebrates have no bones or major hard parts, which gives them some big advantages.
Many of the earth's scariest creatures are actually just trying to survive.
In this episode, the expert panel meet a ninja warrior with a clay remedy for wounds, a Lebanese 'Prince of the Mountain' with a pudding for the sinuses, a young mum with a natural alternative to treating dandruff, and a tea fanatic with a very grubby solution for acne.
Could a machine replace your doctor? Dr Hannah Fry explores the incredible ways AI is revolutionising healthcare, and what this means for all of us.