[Refering to the use of public transport] - can have the affect of increasing emissions as journeys by public transport are usually longer.
---- Really??? You think a bus journey carrying 20 people would produce more than 20times the emmisions of a car? Would a train produce god know how many more emmisions than the number of passengers' cars? I think not!
[Refering to more efficient energy sources] - "very easy to say without saying anything at all. What are these energy sources and what is the emissions cost of developing them?"
--- what I meant to say was carbon efficient energy sources. E.g. Nuclear power, which gets far too much bad press than it deserves.
[refering to Aluminium recycling] - "Certainly saves resources, but does not reduce emissions. Emissions are increased because, rather than waste being transported and stored, waste is transported, recycled and transported again."
--- Just plain wrong! the energy consuption (and thus CO2 production) in producing aluminium is 6 times greater than the energy consumption of simply recycling it! The costs of actually transporting the aluminium are a mere dot in comparison to the cost of electroylsis!!!
[reference to fuel consumption at higher speeds] - So we go from an efficiency of crap to very very slightly less crap.
--- No, you'll be surprised! Next time you're out driving, drive slower on the motorway and you'll notice how your fuel consumption goes dramatically down! The aerodynamic effects are much less and friction is also less (and before you say it, no...the amount of CO2 saved is not used up in the extra 5 minutes of your journey. Not by a long way.)
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