Re: Renewable energy - the old chestnut, puréed
Probably one of the main problems is how politics and other "agendas" got in the way of science. There is a chap working for NASA, I wish I could find his calculations he showed in a BBC documentary - he works out that, for example, how many square miles of wind farms *per week* are needed to be put in service in order to compensate for the increasing emissions. This was calculated with the individual co2 average footprints of a "western" individual, the time it takes to break even (e.g. co2 footprint of making the turbine vs. its effect) etc.
The numbers looked... hilarious, if one has that dark sense of humour. Of course it was all based on existing figures that, including the climate model, may be wrong - but it is interesting to see the cold light of reason applied to hype and demagogy.
Not sure if we have doom coming, many of the models and their predictions were proven wrong, and many have been adapted/changed based on constantly discovered new data... but it is interesting to see how some can step outside the rhetoric bubble, so there is hope
I think, without any specific political views against or for the likes of him, the doom comes when Gore-like characters get their way...although he has been "saving the planet" for ages...
Apologies for bringing in George Carlin's satyrical take, but in a very abstract and rational sense he was right: the planet will just integrate co2, plastics, radioactive waste into a new paradigm ("planet + plastic" etc.) and move on into a next phase. Latter may not be very good for some species
but c'est la vie ...