3:00pm

Wed June 29, 2011
Environment

Marijuana Plants Discovered At National Park

In the green idyll of Wallowa-Whitman National Park in Oregon, more than 90,000 marijuana plants were discovered earlier this month. Park officials now have to cope with the cleanup of the site — and the toxicity caused by an extensive camp of pot farmers and the fertilizers they used. Melissa Block speaks with park ranger Ken Gebhardt about the job ahead.

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