People Fixing the World Folgen

A greenhouse cooled and humidified by seawater and the wind is transforming arid land. In Somaliland, vegetables have been grown in a spot previously thought too hot and dry for farming. It works by creating a cool oasis that shields the plant from the heat. The designers believe if more were built, they could make Somaliland completely self-sufficient in fresh produce. Presenter Julie Ball Written and Produced by Nick Holland and Julie Ball Picture: Karl Fletcher, Seawater Greenhouse

The world generates more than two billion tonnes of rubbish every year. So we’re visiting companies in Sweden that want to make it easier to mend things when they break instead of replacing them – whether that’s clothes, bikes or washing machines. We also hear about the country’s tax breaks designed to give people a financial incentive to repair more.Produced and presented by Maddy Savage

Head injuries in sport can have a devastating effect on the brain, which is often only noticed later in life. So lots of people are investigating ways of making it safer to play sports such as American football, boxing and soccer. We look at new technology including smart mouth guards and innovative helmets, and we find out about the latest medical developments that are helping people to combat the risk of brain disease. Produced and presented by Ben Wyatt