Since 2002, the Peruvian government has required tourists to have a permit and a guide to hike the Inca Trail to Machu Picchu. Only licensed guiding companies can obtain permits, so it's vital to do ...

We tested the best down booties for outdoor and indoor use including The North Face, L.L.Bean, Teva, and more.

What’s the right number of BOAs on a snowboard boot? Is it one? Is it two? Is it, dare I say, three?

A newly developed machine learning algorithm is taking on math problems that have vexed experts for decades. By Margherita Bassi HTC Vive Focus Vision Showcases the Problems of VR Headsets That ...