Fast-forwardingtomoderntimes,theheydayofthehuman-poweredflightisfarfromover.Lucrativeprizesstillaboundforrotor-drivencraft,whilstexperimentalversionsofhelicoptersandornithopters(flyingmachineswithflapping,bird-likewings)arebothonthedrawingboardandleapingoffitwithgreatabandon.Thedreamofhuman-poweredflighthasbeenanofficialrealitynowformorethan50years,butthelimitsoftheiringenuityareboundless–especiallywheninventorsandengineersarespurredonbyprizesaslargeasthe$250,000onofferfromtheAmericanHelicopterSociety’sIgorSikorskyPrizeFund.Andwhoknows,perhapsonedayhiscommutetoworkwilltakeplacenotonabicyclebutonabicycle-poweredcraft.Doesyourofficehavealandingpadontherooforarunwaynearby?Thedaywhenshedoesmightjustbecloserthantheythink!

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