You don’t have to be an expert, or even an adult, to come up with a cool and useful invention.

A whistlestop tour of some of the world’s greatest inventions, including fun things like LEGO, roller skates, and balloons; things invented by young people (earmuffs, Popsicles, the trampoline); printing, photography, phones, computing, gaming, the internet, going wireless, power, self-driving cars, flight, and medical advances (artificial organs, contact lenses, hearing aids); things that keep us safe (CCTV); things that make life easier (microwaves, fridges, and freezers); and foods such as popcorn and ice cream!