There's a definite mood in the air at the moment - from Prince Charles' railing against the prevailing political consensus to the stark findings of the Power Inquiry - that mainstream politics is manifestly failing to address certain long-term issues facing the country and indeed the planet.
Here's a good example of what I mean from George Monbiot in today's Guardian on the question of whether unlimited growth in commercial aviation is in any way compatible with the need to tackle global warming.
I have a personal pet theory that eventually the world will be forced to bite the bullet on this and that long-haul air travel will ultimately either be outlawed or become once again the preserve of the super-rich.
No sign of this from our present political leaders though who insist that the construction of a fifth runway at Heathrow Airport and the development of Stansted, Manchester and other regional airports in no way detracts from their "commitment" to the environment.
March 1 Update: John Humphreys must have been reading Monbiot (or even this blog..!) because he asked David Cameron about this very point on this morning's Today Programme. Cameron accused him of trying to set up a "false choice" between growth and greenery, arguing that investment in new technology would solve the problem. In fact as Monbiot points out, switching aircraft fuel from kerosene to hydrogen would produce so much water vapour it would probably make the "greenhouse effect" even worse.