Talk:Hydrogen planes

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I'd like to see a citation for the manned Boeing plane in 2007.--Eljamoquio 21:40, 26 November 2006 (UTC

Water vapor--the buyprduct of a hydrogen powered plane--is a greenhouse gas.

Burning hydrogen in air also produces oxides of nitrogen that are greenhouse gases.


I would like to recommend a link to the stub in wiki:Water Vapor. Which clearly states that water vapor is Earth's primary greenhouse gas.


"hydrogen is the most energy-dense combustible fuel known": Can someone confirm this statement? It appears to me as being in contradiction with statement "the energy density of both liquid hydrogen and hydrogen gas at any practicable pressure is significantly less than that of traditional fuel sources." on Hydrogen#Energy_carrier 212.112.209.29 (talk) 17:46, 19 December 2007 (UTC) Dalexis

Energy density per unit mass is high compared with jet fuel, but per unit volume is lower. Mike Young (talk) 16:02, 7 January 2008 (UTC)