Wolves matter. Technology shows us why

From CNET.com:

Heavy gray clouds hang low in Alaska’s Denali National Park and Preserve this September morning. There’s an 80 percent chance of rain, but we’ve lucked out with only a light mist so far. I’m walking along the banks of the Teklanika River, which cuts a 90-mile swath through inland Alaska, with Bridget Borg, a wildlife biologist with the National Park Service, and biological assistant Kaija Klauder.  

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