A Ugandan chemist has found a way to use old cattle bones and food waste to make clean water.
Timothy Kayondo turns the rubbish into activated carbon, which he uses to produce water purifiers. They\u2019re being used in schools and hospitals.
It is estimated that one in 10 people on the planet do not have a basic level of access to clean water.
In this programme we find out about Timothy\u2019s work and discover more ways people around the world are getting access to safe drinking water.
Presenter: Jo Mathys\nReporters: Mercy Juma, Celestina Olulode and Tom Colls\nProducers: Daniel Gordon and Tom Colls\nImage: Timothy Kayondo