WDAY: The News Leader

Published June 25, 2013, 11:42 AM

94 in Alaska? Weather extremes tied to jet stream

WASHINGTON (AP) — Lately, the jet stream isn't playing by the rules. Scientists say that big river of air high above Earth that dictates much of the weather for the Northern Hemisphere has been unusually erratic the past few years.

By: SETH BORENSTEIN,AP Science Writer, Associated Press

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