People Fixing the World

A young Zimbabwean, Farai Munjoma, has set up a network of mentors to help Africa’s youth achieve their dreams. The idea is to link young people up with someone who can inspire and guide them as they apply to university and jobs. Reporter: Victoria Uwonkunda Producer: Jo Mathys

This week we hear from Colombia, where a helpline with a difference recently opened. Its aim is to stop domestic violence, but instead of targeting victims, it targets the perpetrators. The idea is to get men in particular, who are struggling with jealousy, anger and other strong emotions, to phone in and get help. Produced and presented by Craig Langran Picture: Getty Images

The Sinai desert in Egypt is a dry, barren place where not much grows. But Ties van der Hoeven has come up with a scheme to turn it into a green and fertile land. It’s a plan on a huge scale which involves dredging a lake, restoring ecosystems, and even bringing back rain to the desert. He’s been inspired by a successful project to restore the Loess Plateau in China. But could it work in the Middle East?Produced and presented by Richard Kenny.Picture: Getty Images

Are stickers still saving lives? Was a coral reef repaired? Did the volcano erupt? In this episode we check back in with three projects that have featured on our programme over the past four years and find out if everything went to plan. We hear from the scientist who developed a sticker that stops car crashes, the people behind an insurance scheme for coral reefs, and find out if a plan to deliver aid before a disaster was up to the test. Producer/presenter: Tom Colls Reporters: Richard Kenny and Jo Mathys Image: The Red Cross operation in Ecuador

It has taken him 40 years, but Omar Tello has turned a patch of exhausted farmland in Ecuador back into rainforest. One of his biggest challenges was repairing the soil. His land was so degraded he had to make enough new soil - from unwanted wood shavings and chicken manure - to cover the entire plot. That alone took about 15 years. He also travelled deep into the Amazon for days at a time, looking for seeds and plants he could rescue. Now his forest is flourishing and the wildlife has returned - it is home to snakes, toucans, monkeys and many other animals. And he is sharing what he has learned to encourage others to protect the rainforests instead of cutting them down. Presented and produced by Jo Mathys.Repeat - first published 31 March 2020.

There are thousands of oil and gas platforms in the world’s oceans and in the coming decades many will become obsolete. Some people think that instead of treating them as industrial waste, we should embrace the ecosystems they’ve created and leave them in the sea as artificial reefs. This approach has been adopted by some US states, and scientists are considering whether this could also work in the North Sea. Produced and presented by Celestina Olulode Picture: Getty Images

Scientists are checking up on the health of forests by analysing the sounds in them. They test their vital signs by measuring the croaks, tweets and hums of resident creatures. If they can hear a full range of animals they can be confident an ecosystem is doing well. However, if gaps start to appear, it’s a sign something is up. Nick Holland hears more about how it works and how it’s being used to strike a balance between the needs of Papua New Guinea’s growing indigenous communities and the need to preserve the biodiversity of the forests they live off. Produced and presented by Nick Holland Image: The Nature Conservancy

Marlo the labrador is learning how to sniff out Covid-19 in the UK. In Tanzania, Polish hound Thor is on the track of wildlife poachers. We explore how their extraordinary noses are tackling these issues and more around the globe. Produced and presented by Claire Bates

This is the story of how one man is trying to transform lives through the power of the humble bicycle. Many rural communities in rural Africa don’t have access to cars or good roads, which can make it hard to take fresh produce to market or get to school. But Wyson Lungu wants to change that with an innovative scheme to sell affordable bicycles. We follow him as he delivers a new set of bicycles to excited customers in southern Zambia. Produced and presented by Richard KennyImage: unfoldstories.co.uk

Machines to shred, melt and mould waste plastic are popping up in workshops around the world - from the UK to Malaysia, Kenya to Mexico. The project is being led by an organisation called Precious Plastic. They put designs for the devices online for anyone to download and build themselves. More than 400 teams around the world are now taking on the challenge of plastic waste using these machines, making everything from sunglasses to plastic bricks in the process. Presented and produced by Tom Colls Image: Precious Plastic