Everest, The Earthquake, my Husband Norbu Sherpa and Me.
Between waiting her turn for the rescue chopper and summiting in silence one year later, Andrea Sherpa-Zimmermann relies on her husband, a native Sherpa, as her guide on Everest.
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The Great Barrier Reef outlook is 'very poor'. We have one last chance to save it.
It’s official. The outlook for the Great Barrier Reef has been downgraded from “poor” to “very poor” by the Australian government’s own experts.
It's Time to Break the Deadlock over Africa's Ivory Trade: Here's How.
Fierce debates over ivory have dominated the global conference for the international trade in species for 30 years since the first international ivory ban was instituted in 1989.
A Tipping Point for Freeride Mountain Biking
Freeride has remained conspicuously male-dominated. Now, a tenacious group of riders are part of a movement to change that, and they’re throwing down at some of mountain biking’s biggest events.
Rhiannan Reigns Supreme: Red Bull Cliff Diving
Rhiannan Iffland's perfect dive from the Mostar Bridge secures her fourth World Series win in a row.
Antarctica's largest floating ice shelf is highly sensitive to warming of the ocean
Much of West Antarctica’s ice lies below sea level, and warming ocean temperatures may lead to runaway ice sheet retreat.
Should we Turn the Sahara Desert into a Huge Solar Farm?
According to NASA estimates, each Saharan square metre receives, on average, between 2,000 and 3,000-kilowatt hours of solar energy per year, a farm would be equivalent to 36 billion barrels of oil.