Ways to make our planet greener.
Orkney's remote position makes it an ideal place to test new forms of energy.
A revolutionary movement is seeking to reset the relationship between man and nature.
The humble toilet roll is a relatively recent invention, so why are Westerners firmly attached to using paper?
The Indonesian capital is the world’s fastest sinking city. Now the government wants to relocate it.
The surprising consequences of giving rivers legal rights.
A metro station in the bustling capital of South Korea is home to a new kind of smart farm.
Scientists have found that particles of plastic are falling out of the sky with snow in the Arctic.
Is there any prospect of an improvement for the Black Sea?
Delhi residents desperate for a breath of fresh air are turning to an "oxygen bar".
The surprising history of an item invented to save the environment, not destroy it
Could buildings like Bosco Verticale help tackle pollution and improve people's health?
A unique community project in a Ugandan slum aims to stop poverty and improve the environment.
The world's largest hurricane simulator tests building materials and designs against hurricane-strength winds.
Chennai is India's sixth largest city, but its residents are relying on trucks and trains to bring them water.
The man helping to save Senegal's mangroves
BEST OF 2019: The tiny island of Vanuatu in the South Pacific is waging war on plastic, one piece at a time.
Plant-based alternatives and lab-grown meat are aiming to remove the need for animal husbandry.
People across Japan have started taking lessons in the art of electronic repair.
Five zoo-born rhinos have been transported from Europe to Africa, for a journey of 6,000km (3,700 miles).
Are electric engines the solution to tackle the aerospace contribution to greenhouse gas emission?
Scientists say they will be able to identify where a piece of wood is from to the nearest 10km.
There are 6,500 sinkholes in the areas that were once the Dead Sea.
Colombian farmers are piloting a way of raising cows that's better for the environment.
'The grown-ups have already done so much to deteriorate the environment.'
The BBC's Reality Check team look at common worries about electric cars.
A total of 187 billion nappies are thrown away each year, but nappies are hard to recycle.
In Korea, one group of farmers is adapting to climate change by growing new crops.
Paris is one of the most densely populated city in the EU with relatively few green spaces.
One company in Sweden repurposes old clothing for the fashion industry.
How one company is turning sewer fat into biodiesel.
These street children are being educated with the help of special 'solar bags'.
A novel plan to house homeless families in back gardens.
A man in Kolkata, India turned a landfill site into a crop field.
Leaving your car at home can now earn you rewards.
How one company is turning trash into cash.