Because they would then be incredibly heavy. Please read "Airframe" by Michael Crichton.
Aluminium for passenger planes and titanium for fighter planes
People dont have to walk or drive and it was faster to go wherever they went.
Airplanes.
Not all Piccolo's are black, it depends on what material is used to make the instrument.
you dont
i dont think they make a black currat ice cream but they do make black currant which has black and red currants in it :)
start asking questions
Crush the material in a mortar.
make airplanes
To make airplanes.
Some airplanes are made in the US, but not all. there are several other countries int he World that can make airplanes too.
that song is called Who Knew