6 links
Frequently Asked Questions About The Jet Stream
pbs.org
Includes how high the jet stream is, how fast it's moving, and how it affects weather.
Great Rivers of Air
classzone.com
See what jet streams are, how they change throughout the year, and where the jet stream is right now.
Jet Stream: Current of Rapidly Moving Air
2010.atmos.uiuc.edu
Explains how the jet stream forms between hot and cold air masses.
NOVA Online: Inside the Jet Stream
pbs.org
Contains frequently asked questions, and answers what generates the jet stream.
Wikipedia: Jet Stream
en.wikipedia.org
Briefly explains the jet stream, and how they are important to airplanes.