Fed Ex pilot Gordon Boettger said he has flown east across the country and looked out the window of the Boeing 777 and pictured making the same flight in a glider. On Dec. 19, Boettger and co-pilot ...
An air-filled sac within the birds' lungs is believed to increase the force the birds use to power flight muscles while soaring. Soaring birds -- like osprey, eagles, falcons, even vultures -- can ...
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