Future of airliners?

From:         Dave Byrd <dbyrd@itsa.ucsf.EDU>
Organization: HHMI at UCSF
Date:         27 Jun 95 01:43:12 
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i am curious as to what everyone on this newsgroup thinks will be the
future of aircraft when the fossil fuels start getting really low, and
huge conservation measures are finally instituted?

some have mentioned nuclear powered A/C.

some have mentioned microwave radiation from satelites being converted
into electricity by the A/C.

some have mentioned hydrogen/oxygen combustion.

any other ideas or speculations?

anyone have any inside knowledge on what the major A/C builders are doing
to get ready?