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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

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