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
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.