Hydrogen-powered plane takes off

<"The plane is non-polluting....The waste products are heat and water....">

An interesting set of conflicts, to be sure.

The only problems of using Hydrogen technology are:

• Fire risk
• Explosion risk
  
• Refuelling station availability
• Waste heat
• Full process efficiency, because that Hydrogen has to be made from water, using electricity, and that electricity must be produced.....etc
• Others...

No doubt about it, if Hydrogen Technology is going to be the new way to power cars/trucks/planes etc, all the problems will be easily overcome.

Kind Regards....

All of those problems sound like gasoline problems, with the exception of the fact that the energy must be generated for electrolysis, or a similar process, rather than pumping oil out of the ground.

But I've heard that to get 1 gallon of gasoline, there are several used in the process to get it to you, so, all the "same" if that factor is taken into account.