How human sewage is being recycled to recover a valuable chemical Read more
The treasure in our toilets
How human sewage is being recycled to recover a valuable chemical
Regrowing the rainforest
It has taken 40 years, but this man has regrown a patch of rainforest in the Amazon
The big transport swap
Would robot shuttles, buses on demand and free rides persuade you to ditch your car?
Making the world a quieter place
How sound barriers and noise sensors are helping to make the planet more peaceful
The farmers moving their fields indoors
We visit farmers growing lettuce, herbs and strawberries indoors in the middle of cities
The great spreadsheet in the sky
How blockchain could solve some of the world’s problems.
A Sporting Chance
How sport can change the lives of young people from some of the toughest backgrounds.
The breath of life
A clever way to provide life-saving oxygen
Electricity that grows on trees
Scientists are trying to tap unlikely-sounding energy sources - like the leaves on trees.
The ancient technology getting a second wind
Wind-powered ships are sailing cargo around the world again to help cut pollution.
No more bosses
How do you make work a better place? Get rid of managers, say some companies.
Kids fixing the world
Clever inventions by children that could improve our lives, from apps to robots
Personality tests for loans
How an online test and a phone might be able to help some people with their finances.
How tech is tackling wildlife trafficking
The exciting new tools helping to save some of our most endangered animals.
A future without bees
High-tech alternatives to bees include spraying pollen from drones to pollinate plants
How to get everyone online
Balloons and satellites could help get more people get on to the internet
New uses for old solutions
How two life-saving apps were adapted to fix problems caused by the Covid-19 pandemic
Life-saving surgery, but not by a doctor
Nurses and midwives in Ethiopia are being trained to perform emergency operations
Financing the forests
Making rainforests a profitable investment
Prison Voicemail: Messages from behind bars
Prisoners and their families are keeping in touch with the Prison Voicemail app
The tech doctors forecasting heart failure
Implanted devices can predict when something is about to go wrong with a patient’s heart
The mums saving each other from a taboo condition
Mums in Madagascar are ensuring others get the treatment that has transformed their lives
Could a device invented in the 1930s help end period poverty?
The people hoping to use sanitary pad micro-factories and silicone cups to help women
Keeping data forever
Three radical new ways to save data – in DNA, glass and magnets
A happier planet
Looking for the happiest places in the world and finding out what makes them happy
Smartphones saving the rainforest
Old mobile phones are being used to catch illegal loggers in the rainforest
How to prevent drowning
AI to help lifeguards in Israel and weather forecasts for fishermen on Lake Victoria
Getting rid of AI bias
Better facial recognition and changing algorithms - how to fight racial bias in AI
Training police to patrol each other
US police are being taught what to do if they're worried about a colleague’s actions
How jellyfish can help us
Jellyfish could be used to filter microplastics from water and develop new medicines
How to put the internet in a box
Inside the “sneakernet” - the people carrying websites to places that are off the grid
Saving Cape Cod’s dolphins
Saving dolphins from stranding on beaches - we meet the team improving survival rates
Teenage inventor special
Brilliant ideas from school kids to help solve crime, make life safer and much more
Audience takeover: Your questions answered
Answers to your questions about regrowing the rainforest and other stories we’ve covered
From prison to star employee
Why former criminals are being chosen for jobs at hundreds of companies in a small US city
Riding the solar railway
How to make train journeys greener using the power of the sun
Perovskites: The future of solar?
A new kind of solar cell is made by drying a special liquid on a surface
Building with fungi
Growing packaging, coffins and whole houses out of eco-friendly mycelium
Making meat in a lab
How meat grown in labs could reduce our environmental impact
Saving mums and their unborn babies
Women in Nigeria have come up with an emergency transport scheme that is saving lives
What happened next to our problem solvers
Hydrating sweets for the elderly go on sale and how a housing experiment coped with Covid
Can doughnuts save the planet?
Doughnut economics in action - how we can live well and save the planet at the same time
The solutions whisperer
Dhruv Boruah’s mission is to inspire other people to solve problems facing the planet