Scientists are sending two new satellites into space to discover the world’s worst-polluting countries.
Researchers will use information sent back by the satellites to work out what parts of the Earth emit the most gases that are thought to be harmful to the environment. Experts will also be able to work out the type of places, like forests, that are best at absorbing them, and look for ways of combating climate change on Earth.
The satellites are being launched by NASA and the Japanese Aerospace Exploration Agency. Scientists at the University of Edinburgh in Scotland will study the information they gather.