the jet stream What is a jet stream? (livescience) https://www.livescience.com/27825-jet-stream.html http://www.livescience.com/27825-jet-stream.html jet stream jet stream jet stream jet stream jet stream jet stream LiveScience - What is a Jet Stream? jet stream jet stream jet stream jet stream jet stream the jet stream jet stream jet stream jet stream jet stream the jet stream a dip in the jet stream jet stream jet stream jet stream jet stream jet stream the jet stream