The tech doctors forecasting heart failure

Implanted devices can predict when something is about to go wrong with a patient’s heart

• 24 mins

The mums saving each other from a taboo condition

Mums in Madagascar are ensuring others get the treatment that has transformed their lives

• 24 mins

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

• 24 mins

Keeping data forever

Three radical new ways to save data – in DNA, glass and magnets

• 23 mins

A happier planet

Looking for the happiest places in the world and finding out what makes them happy

• 23 mins

Smartphones saving the rainforest

Old mobile phones are being used to catch illegal loggers in the rainforest

• 24 mins

How to prevent drowning

AI to help lifeguards in Israel and weather forecasts for fishermen on Lake Victoria

• 23 mins

Getting rid of AI bias

Better facial recognition and changing algorithms - how to fight racial bias in AI

• 23 mins

Training police to patrol each other

US police are being taught what to do if they're worried about a colleague’s actions

• 25 mins

How jellyfish can help us

Jellyfish could be used to filter microplastics from water and develop new medicines

• 25 mins

How to put the internet in a box

Inside the “sneakernet” - the people carrying websites to places that are off the grid

• 24 mins

Saving Cape Cod’s dolphins

Saving dolphins from stranding on beaches - we meet the team improving survival rates

• 25 mins

Teenage inventor special

Brilliant ideas from school kids to help solve crime, make life safer and much more

• 23 mins

Audience takeover: Your questions answered

Answers to your questions about regrowing the rainforest and other stories we’ve covered

• 23 mins

From prison to star employee

Why former criminals are being chosen for jobs at hundreds of companies in a small US city

• 27 mins

Riding the solar railway

How to make train journeys greener using the power of the sun

• 24 mins

Perovskites: The future of solar?

A new kind of solar cell is made by drying a special liquid on a surface

• 23 mins

Building with fungi

Growing packaging, coffins and whole houses out of eco-friendly mycelium

• 23 mins

Making meat in a lab

How meat grown in labs could reduce our environmental impact

• 24 mins

Saving mums and their unborn babies

Women in Nigeria have come up with an emergency transport scheme that is saving lives

• 24 mins

What happened next to our problem solvers

Hydrating sweets for the elderly go on sale and how a housing experiment coped with Covid

• 24 mins

Can doughnuts save the planet?

Doughnut economics in action - how we can live well and save the planet at the same time

• 23 mins

The solutions whisperer

Dhruv Boruah’s mission is to inspire other people to solve problems facing the planet

• 23 mins

A forest down your street

The tiny urban forests bringing nature to the heart of the city

• 24 mins

The spacesuits saving mothers’ lives

Suits originally designed for astronauts are helping midwives save lives

• 23 mins

The breath of life

A clever way to provide life-saving oxygen

• 24 mins

How to store power in soil and salt

Batteries made of building blocks and volcanic rock

• 23 mins

Beating superbugs

The small team of Indian scientists who think they’ve found a new way to kill superbugs

• 25 mins

Tackling sport’s concussion problem

How the latest technology is helping to tackle head injuries in sport

• 24 mins

The secret to making your stuff last longer

Clever ways to persuade people to fix old things instead of throwing them away

• 24 mins

The magic greenhouse

A greenhouse powered by the wind has made it possible to grow crops on arid land

• 23 mins

Using satellite photos to help distribute cash

Togo has found a new way to send emergency cash to people struggling in the pandemic

• 23 mins

How to reuse a demolished building

Can you construct a building by reusing materials from ones that have been knocked down?

• 23 mins

Watching out for Gran with help from her toaster

How we could improve care for the elderly by monitoring their use of home appliances

• 23 mins

Helping animals cross the road and other obstacles

The special bridges that are helping to save slow lorises and reunite rare monkeys

• 23 mins

Shred it yourself: The DIY plastic recyclers

Machines to shred, melt and mould waste plastic are popping up around the world

• 23 mins

Pedal power: How bicycles can change lives

One man’s mission to transform millions of lives by selling them bicycles

• 24 mins

The detection dogs tracking poachers and Covid-19

Marlo is sniffing out coronavirus in the UK, and Thor is tracking poachers in Tanzania

• 23 mins

The forest sound detectives

Scientists are checking up on the health of forests by analysing the sounds in them.

• 23 mins

Turning oil platforms into reefs

A home for marine life, but perhaps not in the place you’d expect

• 22 mins

Regrowing the rainforest

It has taken 40 years, but this man has regrown a patch of rainforest in the Amazon

• 28 mins

Catching up with the problem solvers

Are stickers still saving lives? Was a coral reef repaired?

• 23 mins

Turning the desert green

One man's plan to make the Sinai desert fertile

• 24 mins

The helpline for jealous and violent men

A helpline for jealous and violent men is aiming to cut domestic violence

• 23 mins

Smashing the glass ceiling for young Africans

How a network of mentors is helping young Africans achieve their dreams

• 24 mins

Test-tube rhinos

Scientists have an incredible plan to save the northern white rhino from extinction

• 23 mins

The career where it helps to have a criminal past

Ex-cons are running part of the US probation system, and it’s transforming young lives

• 26 mins

The great mosquito swap

How a highly unusual approach to disease is helping to stop dengue fever in Colombia

• 23 mins

How five friends can change a refugee’s life

Groups of Dutch friends are helping families settle when they move to a new country

• 23 mins

Unsung victories in the fight against disease

Remarkable successes against some of the most unpleasant illnesses on the planet

• 23 mins

Introducing: Season 2 of 30 Animals That Made Us Smarter

How animals make us smarter – we thought you might like to hear our brand new episode

• 18 mins

The ATMs that dispense clean fuel

How a start-up in Kenya reinvented the cooking stove

• 23 mins

Turning preachers into LGBT allies

How a group of Kenyans reduced homophobic hate and violence

• 23 mins

Locust hunters

People in Kenya have been paid to catch swarms of locusts eating farmers’ crops

• 23 mins

The seaweed farmers adapting to warming seas

How seaweed farmers in Zanzibar are fighting the effects of climate change

• 23 mins

Ways to save the planet: Swap concrete for wood

We investigate the power of nature’s own creations to help fix climate change

• 23 mins

Ways to save the planet: Fridge detectives

We meet detectives hunting down old fridges to stop greenhouse gases escaping from them

• 23 mins

The library where the books are people

Borrow a stranger for a half-hour chat to challenge your prejudices

• 23 mins

The hotel for homeless people

When the coronavirus pandemic hit, England’s rough sleepers were offered a place to live

• 24 mins

Saving mums and their unborn babies

Women in Nigeria have come up with an emergency transport scheme that is saving lives

• 24 mins

Helping animals cross the road and other obstacles

The special bridges that are helping to save slow lorises and reunite rare monkeys

• 24 mins

Robots on the beat

How police in the US are using tech, including robots, to fight crime

• 24 mins

Can computer games improve mental health?

How computer games are being used to help children process grief and powerful emotions

• 25 mins

Talking signs, amazing peas and planes mapping fires

Innovative solutions for city navigation, plastic waste and forest fires

• 23 mins

How to spot fake drugs with a mobile phone

Mobile phones and apps are being used to detect fake medicines and save lives

• 23 mins

Ways to save the planet: Ancient solutions

We could save 16% of emissions by using biochar, a simple indigenous fertilising method

• 23 mins

COP26: The tech helping you to help the planet

New technology that could lead to better informed choices on climate change

• 24 mins

The 15-minute city

Everything you need on your doorstep: a radical plan to improve our cities

• 24 mins

The tiny satellites changing how we see Earth

CubeSats are small but mighty. They track animals, map coral reefs and spot modern slavery

• 23 mins

Ways to save the planet: Using the sun

Using floating solar panels and a see-through pyramid to help the climate

• 24 mins

Food waste: The solar dryer solution

A simple system for saving food and empowering women

• 24 mins

How to make electricity for your neighbours

The energy microgrid that started with scrap metal and an old bicycle

• 25 mins

Creating an alternative gig economy

Meet the innovators who want to change gig work for the better

• 23 mins

The moo loo and other stories

Training cows to use the toilet and a bouncy castle that fights climate change

• 23 mins

The forest sound detectives

How scientists check the health of a forest by listening to it

• 24 mins

Catching up with our solution seekers

How are Covid dogs, a sturdy bicycle scheme and balloons beaming the internet getting on?

• 24 mins

Making clean water with rubbish

The chemist using old bones and food waste to make clean drinking water

• 24 mins

How to fight fake health news

Can playing a video game ‘inoculate’ your mind against medical misinformation?

• 23 mins

Using VR to change lives

How virtual reality is helping tackle phobias and resolve conflict

• 27 mins

The house that fights malaria

Innovative ideas in the battle against mosquitos

• 24 mins

Training police to patrol each other

How do you get officers to step in to prevent acts of police brutality?

• 23 mins

Violent partners: The ‘window’ strategy

How Iceland pioneered a new approach to domestic violence

• 25 mins

Prison Voicemail: Messages from behind bars

Prisoners and their families are keeping in touch with the Prison Voicemail app

• 23 mins

Insects fixing the world

How flies and bugs can help solve the planet’s problems

• 25 mins

Using haircuts to fight oil spills

How old hair is being used to help the planet

• 29 mins

Making hospitals less stressful

How leaves, lights, sounds and goats can improve patient health

• 24 mins

How to make fishing nets less destructive

Using underwater sounds and lights so only the fish we want to eat get caught

• 24 mins

Saving California’s butterflies

How rearing butterflies by hand is bringing them back from the brink

• 23 mins

Turning tyres into cheap fuel & football pitches

The entrepreneurs using clever chemistry to turn scrap rubber into fuel and car tyres

• 23 mins

Sponge cities that fight flooding

How cities are embracing nature to prevent flooding

• 23 mins

Work: Access for all

We look at workplaces that have welcomed people with learning disabilities on to the team

• 24 mins

Using lotteries to make us better people

The lotteries that nudge people to take medicine, pick up litter or pay their taxes

• 24 mins

Robots fixing sewers

The robots that navigate sewer pipes to find leaks and blockages so people don't have to

• 24 mins

Turning mud into ‘clean’ concrete

The man whose special powder turns waste soil into buildings

• 24 mins

Helping teenagers become good mums

Innovative projects around the world are trying to help teenage mums

• 24 mins

Safer cities for women

How can you stop women being harassed in the street?

• 24 mins

The library where the books are people

Borrow a stranger for a half-hour chat to challenge your prejudices

• 24 mins

Racing to get kids reading

How a race to write books and a gadget that counts words are helping child literacy

• 24 mins

Getting kids out of institutions

Meet the people finding families for some of the 5 million children living in care

• 24 mins

The future of wind power

How floating wind turbines and power-generating kites could help fight climate change

• 24 mins