Yosemite National Park closed for three weeks because of the blaze. Here's how much revenue the region lost because of that.
Turns out you can't believe everything you read on Trump's Twitter feed
Pet waste has become a major pollutant, both outdoors and at home
He was the alpha male of the first pack to live in Oregon since 1947. For years, a state biologist tracked him, collared him, counted his pups, weighed him, photographed him, and protected him. But then the animal known as OR4 broke one too many rules.
The key is to never turn back
The tech company is launching apps, virtual tours, and online exhibits designed to virtually immerse you in our natural heritage
New satellites photograph 700 trillion pixels of your planet
Bears in backyard pools, bears on TV, and now a bear attack
That fancy exfoliating wash cream you just dropped a bundle on? It may be full of "microbeads" and mucking up some major waterways.
David Quammen's gripping new book on nightmare viruses
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