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The great mosquito swap

An innovative new weekly programme looking at how we can solve the world's problems.

• 23 mins

How five friends can change a refugee鈥檚 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

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鈥� 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鈥檚 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鈥檚 rough sleepers were offered a place to live

• 23 mins

Robots on the beat

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

• 23 mins

Can computer games improve mental health?

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

• 23 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

• 23 mins

The 15-minute city

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

• 23 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

• 23 mins

Food waste: The solar dryer solution

A simple system for saving food and empowering women

• 23 mins

How to make electricity for your neighbours

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

• 23 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

Catching up with our solution seekers

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

• 23 mins

Making clean water with rubbish

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

• 23 mins

How to fight fake health news

Can playing a video game 鈥榠noculate鈥� your mind against medical misinformation?

• 23 mins

Using VR to change lives

How virtual reality is helping tackle phobias and resolve conflict

• 23 mins

The house that fights malaria

Innovative ideas in the battle against mosquitos

• 23 mins

Training police to patrol each other

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

• 23 mins