Geologists discover new class of landform -- on Mars

(PhysOrg.com) -- An odd, previously unseen landform could provide a window into the geological history of Mars, according to new research by University of Washington geologists.

Carpets of moss help stop erosion

Every year, billions of tons of valuable soil are lost worldwide through erosion, much of it deposited in bodies of water that fill with sand or silt as a result. Soil losses measured in Germany range from 1.4 to 3.2 tons ...

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