The Blue Peter Earthshot competition is now closed for entries.
The competition was set up to search for the next generation of young inventors, problem solvers and change-makers, giving viewers the chance to be recognised by His Royal Highness, Prince William鈥檚 prestigious Earthshot Prize.
Children aged 5-15 were invited to submit an original idea to address one of five important areas that need help: Fix our Climate, Protect and Restore Nature, Clean our Air, Revive our Oceans and Build a Waste-free World.
HRH Prince William said of the competition, 鈥淚 started the Earthshot Prize to search for solutions to the world鈥檚 biggest environmental challenges and we want to find the next generation of young inventors who can make a change.鈥
More info on the Blue Peter website