Re: [carfree_cities] Re: Living with Driving
> This is because greenhouse gases fromIf this source is believable, the 120-year lifespan applies only to Nitrous oxide. Other chemicals have different lifespans.
> oil, coal and natural gas hang in the atmosphere for upwards of 120
a.. CO2 duration stay is variable (approx 200-450 years) and its global warming potential (GWP) is defined as 1.
a.. Methane duration stay is of 12.2 +/- 3 years and a GWP of 22 (meaning that it has 22 times the warming ability of carbon dioxide),
a.. Nitrous oxide has a duration stay of 120 years and a GWP of 310
They claim that their source is the GIEC (Groupe d'Experts Intergouvernnemental sur l'Evolution du Climat).
> Over time, the impacts from more and more fossil fuelThe tax on fuel can only go so high before consumption of it drops to the point where increasing the tax leads to decreasing revenues from that tax. If the price of gas was so high that most people couldn't afford it, then it would cease to be a point of concern. Isn't that the point of the Hubbert Peak -- that gas would become so expensive that people couldn't afford it anymore?
> burning throughout the world will continue to worsen; extreme weather
> events fed by global warming become more common. It might be necessary
> to raise the price of fuel even more to account for the worsening
> marginal costs of global warming.
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