Ein Byd Bach is a children's/youth programmes series airing on UK television.
Facts about the sky, such as what makes it blue. Plus, different types of cloud and thunder and lightning
How snow is formed, plus the places that get a lot of snow. A look at how to build an igloo and how to make tasty ice-cream
A look at how the world turns, what are glaciers and how they move. Plus, why different plants grow at different rates and an exploration fo the wind
