DoubleEagleinthefirsttransatlanticballoon,wasgreetedbyavidcrowdsinFrance.
Someanimalspantandsweattospeedevaporationofbodymoistureandthuscoolthemselves.
Thecontrolsofmostmodernairplanescanbeoperatedeithermanuallyorautomatically.
Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
Thefirstpaperwasmadefromthebarkofthemulberrytree.