Sometimes the best way to make sense of climate change on Earth is to leave Earth. Satellites can efficiently and accurately scan the entire planet, day in and day out, tracking our rapidly changing climate.
The European Space Agency is presenting an online course, "Climate from Space," in conjunction with the Paris climate summit, COP 21. It began last week but there's still plenty of time to catch up. You can access it via FutureLearn. It's important, it's timely and it's free.
Here's a trailer that may pique your interest.