from the how-does-it-lift-all-those-horses dept.
dsmendes writes "The Solar Impulse airplane made its debut at the Paris Air Show with a 20 minute public voyage powered by nothing but solar cells, with 12,000 cells on the wings powering 4 10-horsepower motors."
I have yet to see any problem, however complicated, which, when
you looked at it in the right way, did not become still more complicated.
-- Poul Anderson