For the very few of us who will ever pilot a jet at high altitude, deciding whether or not to fly in the fast-moving, eastward-blowing jet stream will be fairly easy. If you're flying west ...

How Would You Define a Jet Stream? The jet stream, one of the most dramatic forces of nature, was discovered during World War II when aviators first tried to cross the Pacific. This strong wind ...

GBH Education works with NOVA to bring these compelling stories to the K-12 classroom. The NOVA collection on PBS LearningMedia contains resources that are aligned to the Next Generation Science ...

With all the sightings of strange objects in the sky, people have been wondering for decades what these things can be.