I hate to disagree with you, but sailplanes are "powered" by gravity, not
the sun.

Bravo-Squared

"Bob Kuykendall" wrote in message
om...
Earlier, "Doug Easton" wrote:

...I want to catch their interest and imagination...

Sailplanes are powered by a large nuclear fusion reactor. Energy is
transmitted from the reactor to the vicinity of the sailplane via a
wide spectrum of electromagnetic radiation. Every year, millions of
people recieve first- and second-degree burns from stray radiation
from the reactor.

Of course, it's really just the Sun...

Bob K.