how many people flying at any one time?

BTIZ wrote:

soo... if all those people are in the air.. is the earth suddenly that much
lighter??

In an airplane, air is pushed down to support the plane and it's contents, so
the pressure on the Earth's surface doesn't change. I'd say that makes it "the
same weight". I don't know if one can say the same about people in lighter than
air craft.

George Patterson
Love, n.: A form of temporary insanity afflicting the young. It is curable
either by marriage or by removal of the afflicted from the circumstances
under which he incurred the condition. It is sometimes fatal, but more
often to the physician than to the patient.