We eat millions of tonnes of coconuts every year - with the dense white flesh of the fruit making a tasty snack and the juice a refreshing drink. But the inedible husk and shell go to waste – and it’s this part that innovators and entrepreneurs around the world are now putting to work to solve a whole host of problems. In Sierra Leone, a personal tragedy was the catalyst for young entrepreneur Alhaji Siraj Bah to start a business which takes the coconut husk and turns it into an alternative to charcoal - which is good for the forests and could potentially save lives too. And we’ll hear about the start-up using coconut to keep fish, fruit and vegetables cool for longer, without using any plastic. Presenter: Myra Anubi Reporter: Eric Mugaju Producer: Craig Langran Series producer: Tom Colls Sound mix: Gareth Jones Editor: Penny Murphy Email: peoplefixingtheworld@bbc.co.uk Image: A coconut (Getty Images)