Earth is an extremely complex planet, and we don't always have the best perspective when it comes to assessing its sophisticated performance. Up high in the sky is a network of satellites (some reaching up to 25,000 miles above Earth) tasked with studying the meteorological systems of the planet, helping to create useful graphics that provide a deeper understanding of routines and changes in the atmosphere. "Earth from Space" is a "Nova" episode that details the work of this eye-in-the-sky team as it isolates planetary habits and sudden changes, helping scientists understand significant threats facing the continents, while solving a few mysteries along the way. Read the rest at Blu-ray.com