Cosmic rays detected deep underground reveal secrets of the upper atmosphere (Video)

(PhysOrg.com) -- Cosmic-rays detected half a mile underground in a disused U.S. iron-mine can be used to detect major weather events occurring 20 miles up in the Earth's upper atmosphere, a new study has revealed.

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<p><a href="http://www.physorg.com/news151775496.html">Cosmic rays detected deep underground reveal secrets of the upper atmosphere (Video)</a></p> <p>(PhysOrg.com) -- Cosmic-rays detected half a mile underground in a disused U.S. iron-mine can be used to detect major weather events occurring 20 miles up in the Earth's upper atmosphere, a new study has revealed.</p>