Quote:
Originally Posted by fb_bf
...but there is nothing stopping you from emptying your propane tank int o the atmosphere. The effects are just as bad.
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Yes and no. As with methane, the effects might be bad, but propane degrades in fairly short order. Fluorocarbon refrigerants, like CO2, take a lot longer to degrade, so they accumulate.
If the components of natural gas didn't degrade, we'd have a lot of methane &c in the atmosphere, just from normal biological processes. In fact, there was some news this past year about detection of methane in the Martian atmosphere as being a possible sign of life.