Bicycles

Eurocopter’s low-noise “Blue Edge” rotor blade

Eurocopter’s low-noise “Blue Edge” rotor blade

Maybe I’m venturing into tinfoil hat country, here, but I’m pretty sure I once experienced a flyover by a stealth helicopter. I was camping at a lake in central Texas, during the Fall of 2003. Everyone else had gone to bed, but I was unable to sleep and was sitting up by the remains of the campfire, around 2 AM, just listening to the sounds of the forest, when I very clearly heard a distinctly unnatural sound pass across the dark sky overhead. It was very quiet, and very slow (rhythmically), but unmistakably a helicopter: whup whup whup whup whup. It was a clear night, and the speed at which the sound passed overhead meant it had to be flying at low altitude. There were no lights, just the sound, and I had a very eerie mental image of the glowing silhouette of my body, sitting beside the bright star of the cooling campfire, on a thermal imager cruising somewhere through the blackness above.

Bionic feet becoming reality

Bionic feet becoming reality

Natural disasters like the earthquake in Haiti and man-made tragedies like soldiers or civilians losing limbs to explosives drive the need for better prosthetic limbs. Improved treatments are on the horizon in the form of novel foot and ankle prosthesis which behave energetically more like the human body than existing technologies. These powered devices can […]