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  • Circular runway
    Video duration 3:00
    Will circular runways ever take off? Jump to media player Could circular runways be the future of air travel? Video journalist Dougal Shaw went to meet aviation expert Henk Hesselink of the Netherlands Aerospace Centre.
    • 16 Mar 17
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  • Plastic roads
    Video duration 3:48
    Can plastic roads help save the planet? Jump to media player A start-up company is persuading local councils in the UK to turn local plastic waste into roads. Video journalist Dougal Shaw caught up with the inventor.
    • 25 Apr 17
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  • Huan Ming, the 'sun king'
    Video duration 2:52
    The 'sun king' who built a solar city in China Jump to media player Huan Ming built a vast "solar valley" in China
    • 08 Mar 17
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  • Bobbie, who lives in the Startblok
    Video duration 2:30
    Is this Europe's most harmonious flatshare? Jump to media player A solution for integration - how young Dutch people and Syrian refugees are becoming housemates.
    • 14 Mar 17
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  • Selina with food
    Video duration 3:31
    How one woman is winning the fight against food waste Jump to media player How Selina Juul devotes all her time to reducing food waste.
    • 27 Feb 17
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  • The fog catcher
    Video duration 4:54
    The fog catcher Jump to media player In the slums of Lima, he's found a way to turn fog into water.
    • 02 Dec 16
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  • Fadi, a Syrian refugee in Jordan
    Video duration 6:12
    Work permits for Syrian refugees Jump to media player Most refugees do not have the right to work. In Jordan they're running an experiment to find out what happens when they are given that right.
    • 11 Jan 17
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Media player Will circular runways ever take off?
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Think again: Will circular runways ever take off?

In our Think Again films we hear personal takes on how to fix the world.

Follow video journalist Dougal Shaw on Twitter @dougalshawBBC

A film for BBC World Hacks. Like, Engage, Share.

Read the follow-up article here.

  • 16 Mar 2017
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