It's Saturday! No packed lunch, no school bells, just another fact-filled episode of the Fun Kids Science Weekly. 

This week Dan's chatting to Helen Bell, co-author of The Extraordinary Book That Invents Itself! Find out how you can create a whole bunch of experiments and inventions at home, plus hear about how young people have changed the world with their inventions! 

Learn about the unlikely way in which an element was discovered in Dangerous Dan, then later join Professor Pulsar as he explains one of the most beautiful Earthly phenomena - the Northern Lights, or aurora borealis.