Scientists are checking up on the health of forests by analysing the sounds in them.
Marlo is sniffing out coronavirus in the UK, and Thor is tracking poachers in Tanzania
One man’s mission to transform millions of lives by selling them bicycles
Machines to shred, melt and mould waste plastic are popping up around the world
The special bridges that are helping to save slow lorises and reunite rare monkeys
How we could improve care for the elderly by monitoring their use of home appliances
Can you construct a building by reusing materials from ones that have been knocked down?
Togo has found a new way to send emergency cash to people struggling in the pandemic
A greenhouse powered by the wind has made it possible to grow crops on arid land
Clever ways to persuade people to fix old things instead of throwing them away