What causes floaters in your eyes?

Welcome to 2020! And in our first show out of the gate this decade, we explore the science of excessive sweating; how you can get an egg within an egg; why dirty and clean water don't instantly mix; why people in the opposite hemisphere aren't upside down, what are eye floaters, and why does pressing on my eyes make me see bright lights? Join Dr Chris and 567 CapeTalk's Kieno Kammies to find out... Like this podcast? Please help us by supporting the Naked Scientists