He was a proud Marine who survived three ­brutal tours in Iraq and had plans to redeploy with the ­national guard. But when 30-year-old Noah ­Pippin ­vanished inside Montana’s remote Bob ­Marshall ­Wilderness, he left behind a trail of haunting secrets—and a mystery that may never be solved.

Jon Krakauer If you had it to do over again, how would you do it? Question: If you had it to do over again, would you choose to climb Everest on your own terms, with your own team of friends, and without a professional guide service? Or would…

I like to wear close-fitting base layers like REI's Swift or Patagonia's Lightweight Capilene. When hiking in cold weather I will usually shed or add layers as I go. Can you suggest a good loose-fitting, wicking T-shirt to wear over the body-hugging base for those days when I've really worked up a sweat. Matt Fairfax, Virginia

In triathlon, where training volume can make it impossible to hold down another job, Olympic hopefuls often live with parents or sleep on friends’ couches, struggling to make ends meet

Does any company make a cool one-piece ski suit? The Editors Santa Fe, NM

After surviving Everest avalanche

Airlines look to capitalize on rising obesity

It takes a unique form of wilderness therapy to help people suffering from emotional trauma

I need a thin, lightweight, and durable jacket to keep me warm over a Canadian winter. Problem is I hate fleece and cannot stand to wear anything heavy or puffy, ruling out any down-filled or fleece-lined jackets. I short, too, so no big and bulky jackets either. I know that this is a hard one, but this winter I really don't want to be shivering 99 percent of the time. Tracy Winnipeg, Manitoba

What is the most compact one-man tent that can be used for winter camping in Vermont? I'm looking for something to mainly keep the elements out. I would need to fit it into a carry-on. Also, I am looking into a sleeping bag that can handle cold winter nights in the Green Mountains that I can also fit with my carry-on bag. Alex Columbia, MO