Every season of Size Matters ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Size Matters!

Hannah Fry takes a spectacular look at the science of size. Hannah starts by asking whether things could be bigger, including Earth and living things.

Big Trouble

Hannah Fry takes a look at the science of size. Here, she asks if things could be smaller, including the Earth, living things and the Sun.

That Shrinking Feeling

Hannah Fry takes a spectacular look at the science of size by imagining a parallel world in which everything is made bigger or smaller.

The Best Seasons of Size Matters

The Best Seasons of Size Matters

Season 1