Have NASA’s space tourism posters got you dreaming of hiking the canyons of Mars and gazing at the auroras of Jupiter? Don’t get fitted for a spacesuit just yet — leisure space travel is still a lo...

It's normal to feel a ripple of trepidation as you lower yourself into into the waters of Ongeim L’Tketau. Better known as Jellyfish Lake, this remote marine environment in the even more remote cou...

A literal “once-in-a-lifetime” experience implies the kind of adventure that not everyone can live to tell. The most extreme trips in the world all offer some physical risk, but plenty of incompara...