Green, baby, green

The mad scramble to legitimize a third runway for Heathrow airport is getting to the edges of reality. Electric planes are being touted as part of the equation, even though they waste a huge amount of their energy on hauling massive batteries around.
    And then there are sustainable fuels; substitutes for kerosene with a fiddled pedigree to make them okay. All of which ignores the inescapable fact that nothing done here will have the slightest measurable effect on the global climate.