Standing on the shoulder of a road that winds its way up the hill from the Livermore Valley to Del Valle Regional Park, a shirtless Don Clark flings his glider into the wind. It is, by gliding ...

Remote control gliders typically fly like their full-size counterparts. Tail and wing rudders control the direction of flight — but what if the wings themselves could twist and change their profile, ...

THIS was the awe-inspiring moment a sea eagle gatecrashed a model aircraft demonstration and swooped into aerial combat with a remote-controlled glider. As pilots gathered to show off their skills ...