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Re:The Third Phase of Clean Energy Will Be Most Disruptive Yet by nradov on Wednesday April 03, 2019 @12:53PM (#19564950)
Even if the safety issues could be resolved, the cooling requirements and high volume make liquid hydrogen impractical for commercial aviation.

The most likely carbon neutral solutions for aviation fuel are either algae produced bio fuels, or synthetic hydrocarbons manufactured using renewable energy.

Re:The Third Phase of Clean Energy Will Be Most Disruptive Yet by acidburnNSA on Thursday April 04, 2019 @05:46PM (#19577421)
*Manufacturer using low-carbon energy.

At the moment, biofuels are renewable but high-carbon and nuclear is low-carbon but not (considered) renewable.