成人快手

Electricity that grows on trees

Scientists are trying to tap unlikely-sounding energy sources - like the leaves on trees.

• 23 mins

The ancient technology getting a second wind

Wind-powered ships are sailing cargo around the world again to help cut pollution.

• 23 mins

No more bosses

How do you make work a better place? Get rid of managers, say some companies.

• 23 mins

Kids fixing the world

Clever inventions by children that could improve our lives, from apps to robots

• 23 mins

Personality tests for loans

How an online test and a phone might be able to help some people with their finances.

• 23 mins

How tech is tackling wildlife trafficking

The exciting new tools helping to save some of our most endangered animals.

• 23 mins

A future without bees

High-tech alternatives to bees include spraying pollen from drones to pollinate plants

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How to get everyone online

Balloons and satellites could help more people get on to the internet

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New uses for old solutions

How two life-saving apps were adapted to fix problems caused by the Covid-19 pandemic

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Financing the forests

Making rainforests a profitable investment

• 23 mins

Prison Voicemail: Messages from behind bars

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

• 23 mins

The tech doctors forecasting heart failure

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

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Keeping data forever

Three radical new ways to save data 鈥� 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

• 23 mins

How to prevent drowning

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

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Getting rid of AI bias

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

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Training police to patrol each other

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

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How jellyfish can help us

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

• 23 mins

How to put the internet in a box

Inside the 鈥渟neakernet鈥� - the people carrying websites to places that are off the grid

• 23 mins

Saving Cape Cod鈥檚 dolphins

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

• 23 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鈥檝e 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

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Riding the solar railway

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

• 23 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

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Making meat in a lab

How meat grown in labs could reduce our environmental impact

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Saving mums and their unborn babies

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

• 23 mins

What happened next to our problem solvers

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

• 23 mins