Let's Find Out, RTEjr's science series asks lots of these questions.
You can watch it on RTÉ Player whenever you want! - Let's Find Out Series
All aboard the spaceship Curiosity, captained by a furry alien named Zoom and her human crew mates - the scientists.
In each episode, Zoom asks a question about planet earth and the crew try to answer it for her, along with the help of some super smart earthling kids.
They also have a page with cool experiments from the series - www.rte.ie/learn/lets-find-out/