Whittingham noted that, when heated up, the electrolytic solvent in the battery can turn into a flammable gas, which can potentially trigger a fire.

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The barrier to using the devices in vehicles is no one knows how to carry enough hydrogen, a light and flammable gas that is difficult to compress, to be useful.

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To keep turbine sales spinning, Immelt has turned to a process that partially burns pulverized coal in the presence of pure oxygen to turn it into a flammable gas that can drive linked gas and steam turbines.

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Occurrences of flammable tap water, if not the result of existing gas transport pipelines, can be explained by totally unrelated gas leaks that occasionally occur around coal beds, which are far closer to the surface than natural gas deposits.

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