What is the jet stream and why does it matter?

CBC News published this video item, entitled “What is the jet stream and why does it matter?” – below is their description. CBC’s Johanna Wagstaffe and atmospheric scientist Rachel White walk along and also in British Columbia’s Pitt River to discuss the jet stream’s impact on weather. They explain that there are four jet streams meandering above the Earth and acting as a conveyor belt for storms, wildfire smoke and volcanic ash. Read more: http://www.cbc.ca/news CBC News YouTube ChannelGot a comment? Please note comments are moderated before publication.