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Jet stream
A narrow current of strong winds high up in the Earth’s atmosphere. The jet stream directs the movement of weather patterns around the world.

Jet stream
Image courtesy University of Illinois WW2010 Project
Word of the day
Species >> Every living creature is assigned a species name, grouping it with a class of related organisms that share similar characteristics. Organisms must be able to interbreed and create viable offspring to be in the same species.