People Fixing the World Folgen

Air pollution is a huge problem for China, but did you know it’s actually getting better? The Air Quality Index in several cities is improving, because of a variety of experimental projects that are being rolled out. In this special edition of World Hacks as part of the #SoICanBreathe season, we are in Beijing to gather together some of the thinkers and entrepreneurs leading China’s efforts to clean its air. We work through their ideas with an audience of students and entrepreneurs, as well as hearing reports about clever pollution solutions from around the country.Presented by Mukul Devichand and Vincent Ni. Additional reporting by Emma Wilson and Ruhua Xianyu.Image: A woman wearing a face mask in central Beijing / Image credit: BBC

Voter turnout is a problem around the world, particularly in local elections. But a small group of academics and activists in the US are experimenting with a new way of getting people to turn up and put their cross in a box – a lottery. Every voter is entered and one lucky winner gets a big cash prize. World Hacks investigates whether it works.Presenter: Kathleen Hawkins Reporter: Gemma Newby Producer: Tom CollsImage caption: Lottery balls about to be drawn, Image credit: Thomas Samson / Stringer / Getty Images

Food waste is a massive global problem: the EU alone throws away 88 million tonnes a year. Much of this ends up in landfill and produces dangerous greenhouse gasses which contribute to climate change. In Europe 53% of food waste comes from households, and one woman has made it her mission to stop Danes throwing away food. We travel to Copenhagen to meet Selina Juul, a key part of Denmark’s food waste revolution.