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06:27 SCIENCEGLOBAL ISSUES https://www.dw.com/en/when-the-jet-stream-weakens/video-62097932 06/11/2022June 11, 2022 The northern polar jet stream is weakening in strength as a result of climate change. That’s causing the band of wind to sway off course. Meteorologist Marion Maturilli is carrying out research to understand the wide-ranging impact of this trend.