A few bumps under the snowy slopes are better for environment

 Most people schussing down a ski slope probably don’t wonder if it’s been cleared or graded and why the answer makes a big difference to the surrounding environment.  A new study out in December’s Ecological Applications finds that there is a big difference between a downhill ski slope that’s been cleared (cutting and removing shrubs and trees) versus one that has been graded (extracting tree stumps and...

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