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How a huge landslide shaped Zion National Park
Phys Org   26 May 2016   USA   Utah  
This view of Zion Canyon in Utah's Zion National Park shows the flat valley floor created when part of the peak named the Sentinel collapsed in a gigantic landslide.
<p>A Utah mountainside collapsed 4,800 years ago in a gargantuan landslide known as a "rock avalanche," creating the flat floor of what is now Zion National Park by damming the Virgin River to create a lake that existed for 700 years.</p> <p> </p>
'Carbon sink' detected underneath world's deserts
Phys Org   28 July 2015   China   China Desert  
Scientists found that as water moved through irrigated fields, the water gathered dissolved carbon and moved it deep underground. Credit: Yan Li
<p>The world's deserts may be storing some of the climate-changing carbon dioxide emitted by human activities, a new study suggests. Massive aquifers underneath deserts could hold more carbon than all the plants on land, according to the new research.</p> <p> ...