The winners
Protect and Restore Nature:
- The Republic of Costa Rica: Costa Rica was a country that once cleared most of its forests, but it has now doubled the number of trees and is seen as a role model for others to follow. The winning project is a scheme paying local citizens to restore natural ecosystems that has led to a revival of the rainforest
Clean our Air:
- Takachar, India: A portable machine created to turn agricultural waste into fertiliser so that farmers do not burn their fields and cause air pollution
Revive our Oceans:
- Coral Vita, Bahamas: A project run by two best friends who are growing coral in the Bahamas, designed to restore the world’s dying coral reefs. Using special tanks, they have developed a way to grow coral up to 50 times faster than they normally take in nature
Build a Waste-Free World:
- The City of Milan Food Waste Hubs, Italy: Another challenge is waste – and the city of Milan in Italy wins a prize for collecting unused food and giving it to people who need it most. The initiative has dramatically cut waste while tackling hunger
Fix our Climate:
- AEM Electrolyser, Thailand/Germany/Italy: A clever design in Thailand using renewable energy to make hydrogen by splitting water into hydrogen and oxygen. Hydrogen is a clean gas but it is usually produced by burning fossil fuels