A Strange Thing Happened in the Stratosphere

What would cause a wind pattern that held for at least 60 years to suddenly change? NASA scientists are working to understand the recent quirky behavior of winds in Earth's stratosphere.
Credit: NASA's Goddard Space Flight Center; Kayvon Sharghi, producer
This video is public domain and may be downloaded at:
http://svs.gsfc.nasa.gov/12365
Read more:
http://www.nasa.gov/feature/goddard/2...