Ways to make our planet greener.
There are 6,500 sinkholes in the areas that were once the Dead Sea.
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.
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.
Orkney's remote position makes it an ideal place to test new forms of energy.
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.