Brilliant solutions to the world鈥檚 problems.
How a van is helping homeless people stay clean.
Testing yourself for sexually transmitted infections at home.
Closing roads to traffic so children can play in them.
Helping young Japanese men who refuse to leave their bedrooms.
Should new homes come half-built to make them more affordable?
Space in the sky is being used to ease a city鈥檚 transport problems.
How nets in Peru are turning fog into water.
The table bringing fun to people with dementia.
