People Fixing the World

If you examine the atoms in a piece of wood, you can tell to the nearest 10km where it has come from. Environmental factors, such as the climate, affect trees as they grow and that signature remains in the wood after it is processed. An international group of scientists is hoping to use this information to tackle illegal logging, which contributes to a loss of biodiversity and costs governments bi...

Should we reuse and refill plastic packaging to limit the amount being thrown away? Nick Holland looks at different ways people are trying to make this happen. One idea is to take used containers back to the supermarkets where, in the future, giant vending machines could refill them. But the scale of the challenge is huge and getting consumers to change their shopping habits will be hard. Presente...

The average dog produces about 124kg of poo every year, but not all of that gets picked up and disposed of properly. So people living in many residential blocks in the US have had their dogs’ DNA registered on a database, in an attempt to tackle problem poo. If they don’t pick up after their dog, a sample of what’s left behind is sent off to a lab so the perpetrator can be identified. The company...

Every year, it’s estimated that nearly 400 million people around the world are infected with dengue fever, a potentially fatal illness that’s passed on by mosquitoes. No vaccine is effective at preventing people catching the disease, but what if the mosquitoes themselves were treated to stop them spreading it? In one city that is severely affected – Medellin in Colombia — an ambitious project is u...

"Get rid of the girl who smells" - this is the reaction thousands of traumatised new mothers face every year. A prolonged or obstructed childbirth can lead to a condition called obstetric fistula, where women are left incontinent, continually leaking urine and faeces. Without treatment they often become socially isolated. But in Madagascar, some women who have successfully been treated for fistula...

Tens of thousands of people die every year because bacterial infections are becoming resistant to antibiotics. That number is expected to explode, as more antibiotics stop working, making antimicrobial resistance, or AMR, one of the gravest health threats facing humanity. But could viruses come to the rescue? Bacteriophages, or phages for short, are viruses that infect and kill bacteria. They were...

Europol, the EU's law enforcement agency, is taking an innovative approach to solving disturbing crimes. It holds more than 40 million images of child sexual abuse. In many cases the perpetrators remain at large, and their victims unidentified. By posting parts of those photos online - with the abusers and their victims removed - they are hoping members of the public can help them find out where t...

Cyprus has been divided since 1974, but a community centre is bringing Greek Cypriots and Turkish Cypriots together in the buffer zone between the two sides. Cyprus has been a divided island since 1974, with Turkish Cypriots living in the north and Greek Cypriots in the south. The two communities have been able to cross the island at police checkpoints since 2003, but memories of past conflict hav...

Children who lose a parent may struggle to come to terms with this for the rest of their lives. In the UK about one in 20 children will lose a parent before the age of 16. In other countries, the figure is even higher. However, Gaby Eirew thinks she has a solution that can help. She works in counselling, often dealing with childhood trauma. Using that experience she has created a free app that has...

It’s estimated that 400 billion square metres of fabric are made every year – enough to cover Germany – for the fashion industry. The sector produces a similar amount of greenhouse gases to the international airline and shipping industries combined. The two most-used materials are cotton and polyester. Growing cotton requires a vast amount of land and water, and often chemicals too. Polyester is a...

About 800,000 people take their own lives every year, that’s one person every 40 seconds, according to the World Health Organization. For decades, doctors and researchers have tried to establish the key risk factors that identify someone as being at risk of suicide - depression, drug addiction and low social support have all been proposed - but research shows that no one variable gives doctors a u...

In 2006, Turkish entrepreneur Bedriye Hülya set up her first women-only gym, b-fit. It’s cheap to join and is now a successful chain. Many women in Turkey don’t feel comfortable exercising alongside men and their male relatives may not allow them to use mixed gyms, so b-fit is a place where they can go. Women in Turkey are more likely to be overweight than men, according to government statistics,...

Over the past 10 years, Nepal has almost doubled its population of Bengal tigers – it’s estimated the country now has 235 of the magnificent beasts. After years of decline, a combination of smart strategies has turned the tide. The army runs anti-poacher teams, using CCTV, data monitoring and elephant patrols. Income from tourism is channelled to communities bordering the park to build fences to p...

There are 14 specialist shops at the Retuna shopping mall in Eskilstuna, Sweden, but they all have one thing in common. Every item for sale in the shopping centre is second-hand. The clever thing about this mall is its location. It is right next to the city’s refuse and recycling centre. When people come to drop off mattresses and cardboard, they also pass by the mall’s basement to leave unwanted...

There are an estimated 350,000 autistic children in Turkey, but only 20,000 to 30,000 of those children are thought to be in education. And because of stigma around the condition, many parents are reluctant to get a diagnosis. Zafer Elcik’s younger brother is autistic and was unable to read or write. But Zafer noticed that while his brother’s attention span was usually very short, he would happily...

In this talent show, it doesn’t matter if you can sing or dance, the winner just has to be honest and good at their job. It’s called Integrity Idol and the aim is to “name and fame” honest government workers - people who reject corruption and refuse to take bribes. The idea is that this creates positive role models to change society for the better. The competition is being run in seven countries a...

People in many parts of the world are having fewer babies than they were 60 years ago, and that’s worrying some countries. So in order to maintain the proportion of people of working age, governments have come up with campaigns to try to get people to have more children. Polish couples have been encouraged to “breed like bunnies” and speed dating events have been laid on for singles in Georgia. Ni...

Do you ever wonder what happens to the people and projects we feature? This week we revisit innovators around the world to see how their schemes have developed. We catch up with the team catching junk in space, and the PODD disease detectives in Thailand tell us how they’ve successfully stopped the spread of infections. We also check in with the man who planned to give QR codes to homeless people...

In 2009, Todd Bol built a small box in the shape of a school, filled it with books and placed it on his front lawn in Wisconsin, in the US. The book exchange soon became a focal point for the community. Now there are more than 75,000 Little Free Libraries in 88 countries across the world, including Sudan, Russia and the UK. They are open to everyone, they never close and have no paperwork or overd...

Many African countries face huge challenges in education. Millions of children completing primary school still struggle to read and teachers that should be in classrooms are routinely absent. Two US entrepreneurs think they have a solution: a network of profit-driven low-cost private schools, called Bridge Academies, that can be created and staffed at lightning speed. Lessons are scripted by ‘mast...

World Hacks visits a long, narrow street in the heart of the Dutch city of Eindhoven. A quarter of a mile long and lined with pubs and bars, Stratumseind is a drinking destination for the country’s young people and football fans. Unfortunately, the good times are frequently marred with violence. On any given Saturday night, police make about 20 arrests or detentions, many involving alcohol-related...

The idea behind “Buddy Benches”, also known as “friendship benches”, is simple. If a child feels lonely at playtime at school, they can go to the bench as a signal that they need someone to play with. Another child will see them, go and talk to them and include them in their games. However, a social enterprise in Ireland wants to do something more with them. Buddy Bench Ireland builds a day of wor...

What’s being done to clean up the shipping industry and make it less polluting? Nick Holland looks at innovative ideas to make ships burn less fuel. The industry plays a critical role in the global economy. But it’s under pressure to decarbonise. Could giant rotating cylinders and millions of tiny bubbles be the answer? Presenter: Kat Hawkins Producer: Nick Holland Photo Credit: Getty Images

Around the world, thousands of people are using a special kind of bank. Instead of using it to save and spend money, they’re using it to save and spend time. Based on the idea that everyone’s time is worth the same, time bankers exchange lawn mowing for childcare, and dog walking for graphic design. World Hacks reporter Tom Colls enters the time economy and looks at the projects trying to upgrade...

More than a quarter of Japan’s population is over 65 and the country has the highest rate of centenarians in the world. It’s a ticking demographic time bomb as the cost of caring for the elderly rises. But can the solution to this growing problem be found in Kashiwa City near Tokyo? A project there has been looking at how to redesign towns and cities to adapt to their residents as they reach old a...