NEW! Outside TV show

Alex Honnold explores Nevada’s wild side

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NEW! Outside TV show

Alex Honnold explores Nevada’s wild side

Watch now

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Photographer Josh Hydeman has made it his mission to illuminate America's caves and spark interest in what lies beneath.

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It's a long story involving snow gods, the director's next film, and big money for the ski town. Take a seat.

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Performance wear that makes you the canvas

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See Old Faithful erupt in person or on your phone

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Europe's lowlands are becoming the mecca of solar-powered bike paths. We especially like this take on Van Gogh’s most famous work.

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New safety measures appease NPS

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Dozens of visitors approach animals for photos

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Review site offers 28,000 companies' services through online booking portal

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Shot by son-in-law while tangling with bear

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Similar to compound banned for major health risks

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Went missing Wednesday on the Maroon Bells

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New film series envisions nature as force, not victim

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The plushest home on four wheels

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Finishes more than an hour ahead of next woman

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Two-thirds of planet absent from program

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Marathon-racing CEOs linked to more valuable firms

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Population could reach 12.3 billion by 2100

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Drug cartels no longer barrier to enjoying "most dangerous national park"

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State law requires 3-foot buffer from cars

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Rainforest structure will be tallest in South America

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Formula E series kicks off with a crash

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But don't cry into your brew just yet

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Find and charter a captain who floats your boat

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Wants hikers to get off the grid by bringing it with them

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New analysis offers dire forecast

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Fans can donate up to $500 at a time

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Japanese capital tops survery list, with Rio de Janeiro at bottom

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Bayou expected to disappear in the next 50 years

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Beginning September 15

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US Airways flights to be withdrawn September 1

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This cruel new wearable will shock you if you don't exercise.

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"No Turning Back" tour begins October 18

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While wearing Rapha, riding Specialized

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Help U.S. earn 14 golds, lead medal count

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Mountain biker jumps 100 feet, 3 inches

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Animal blamed for 7 deaths

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28 bike flats caused by tacks strewn along route

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Discovery might halt future Mojave Desert solar installations

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Plans to nearly double the size of its San Diego killer whale environment

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Illegal rhino killings up 7,623% in six years

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When it comes to staying hydrated, you need the right bottle for any activity.

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What's next for the maker of portable solar products

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Premie arrives in an alpine meadow

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Google's FASTER project will double connection speeds

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One man and his canine pal cover 13,000 miles in 32 states to discover just how strong our relationship is with man's best friend.

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Phones detect sounds of illegal logging

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First of two tropical cyclones hits today

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Demand for almonds up 220% since 2005

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Repeated warnings ignored

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Bass-heavy music empowers, boosts performance

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British climate projections show impact on global resources.

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Death by flood less common than by lightning

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No environmental hazards or foul play suspected

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Man biking 1,840 miles against doctors' orders

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Gentle giants save more than 850 lives annually

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But you have to go vegan

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Thanks to a $2.4 million bike path, not Putin

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If there's attention being doled out, your dog wants it.

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World's third-largest facility funded, designed, made by Americans

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Walk the 1,800-foot bridge, then leap overboard. If you dare.

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UAVs are heroes when it comes to protecting the environment

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$1.3 million Exosuit will take divers to depths of 1,000 feet

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New fees take effect today

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New technology identifies bird songs

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It costs only $3 million, but there's a catch

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State will impose emergency bans on wasteful practices in August

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Crowdfunding project to create year-round indoor facility

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Contador becomes the second prerace favorite to exit

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Spartan Racing, Reebok, and NBC announce multiyear rights deal

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Three plane fuselages in a Montana river might seem like a problem, but there’s more to the accident than meets the eye.

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Company to host gourmet 3D-printed meal with robot waiters

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And why ordering first is best

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But only if we stop overfishing

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Lost bags, delayed flights, and a lack of transparency

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World's largest subterranean jump park opens Friday

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Introduces "Happiness Blankets" to monitor passengers' brainwaves

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Bike-mounted radar unit warns cyclists of approaching cars

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