Growing green spaces in the skyThe landscape architect creating some of Singapore's most iconic green walls and rooftop gardens.
Plant peel extends life of fresh produce Apeel Sciences uses plant materials to create a thin barrier for fruit and veg to stave off spoilage.
'Paper bag boy' pioneers new carrier bags Abdul Muqeet is championing a new type of carrier bag made from old newspapers.
Safeguarding South Africa's oceansMarine scientist Kerry Sink is leading the charge to protect South Africa's unique marine life.
The world's first National Park CityDaniel Raven-Ellison plans to make London the first urban national park in the world.
Turning cow dung into clean energyHow Kenyan coffee farmer Zeddy Rotich uses cow dung to power her biogas stove.
Growing indigenous plants in the desertEmirati landscape designer Kamelia Bin Zaal is educating people about the beauty of indigenous plants.
Monitoring dolphins in MauritiusHow the Mauritius Conservation Society protects dolphins from tourist activity.
Turning unused spaces into urban farmsInvestment banker turned urban farmer Stuart Oda transforms Beijing's unused spaces into urban farms.
How plastic can be recycled to build roadsEngineer Toby McCartney has found a way to mix recycled plastic in with asphalt to make new roads.
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