A valuable nutrient is being extracted from human waste in the Netherlands.
People Fixing the World
Scientists around the world are working on ideas that could stop banana crops being wiped out by Panama disease.
A block of flats in Sweden is tackling loneliness by mixing age groups - and making socialising an obligation.
A town in Finland is offering free gym sessions to everyone over the age of 65.
Leftovers from a popular drink are collected and used to create these sunglasses
Children are learning how to run their own businesses while they are still at school.
Care centres and specially designed courts are helping rape victims in South Africa
A new system in Stockholm combines waste collection with parcel delivery to cut carbon emissions.
The cement industry produces about 7% of global CO2 emissions, so it's developing these solutions.
An alarm that connects neighbours is helping to stop fires spreading.