The positive part of climate forcing is that it keeps us all warm, and adversely cool too. It drives the weather and powers green energy. The sunlight that heats up the earth, this is positive.
Negatively the green house affect has been warming the earth too much lately. I honestly prefer warmer weather, but polar bears don't seem to adapt well to the warming weather. Their ice shelves are thawing and natural environment is no longer existing. Humans have driven many animals into extinction, but for some reason feel guilty about this. This sad feeling we get talking about the poor polar bears however is not enough to force the climate to be cooler. Maybe we should let that toasty weather heat up our cold hearts and absorb some of that energy.

The albedo determines much of the earths climate forcing, this is the reflectivity of the earth's surface. The snowy ice caps shine that UV light back out of our atmosphere, rather the dark concrete found in urban areas create warmer temperatures.
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