CNBC: Tackling climate change from outer space
They may be many, many miles up in the air, but satellites have a vital role to play when it comes to analysing our planet and its climate.
In the U.S., for example, NASA says it has over a dozen "Earth science" spacecraft and instruments in orbit, and is conducting research on everything from solar activity to rising sea levels, air pollution and "changes in sea ice and land ice."
The European Space Agency (ESA), based in Paris, is also keen to stress...