This fall, Swiss adventurer Bertrand Piccard and his team will begin test flights of a prototype of Solar Impulse, a sun-powered plane designed to circumnavigate the globe without burning a drop of oil. Piccard wants the project to demonstrate the potential of green technology, and he's feeling the pressure. "We still have to prove that this plane will fly," he says.
We advised "thrill seekers looking for something new to
try" to check out Viennese daredevil Joseph Krupka's wing-enhanced skiing technique. Krupka skied partway down a glacier, then tilted his aluminum wings and "for hundreds of feet soared over the snowy tracks, landing near the foot
of the slope." The practice of enhancing a traditional sport
by adding wings has endured; witness how intrepid modern-
day "skyfliers" have expanded skydiving.
These swooping, be-winged adventurers eventually hope