Some of the most popular videos from World Service in 2018
How meat is recycled from rubbish dumps and sold to the poor
Plants talk and share resources using an underground network called the "Wood Wide Web"
These creations are helping comfort children during their cancer treatment
In the depths of winter in Helsinki, these Finns dive into icy water for a swim. But why?
Denmark's Lego House has playgrounds on the roof
'It's nice to have a new car, home, a new everything but you don't need that to be happy'
How to stop birds crashing into buildings
Grandpa paints his village in cats and dogs
Stephen Hawking on God, artificial intelligence and mankind's future
How a mining town was wiped out by asbestos
Meet the man from Africa who works out by lifting cars
The "Wall of Wind" tests building materials and designs against hurricane-strength winds
