Carbon emissions of solar panels?

[gomipile]

If plastic is used for construction, when a plastic eating micro-organism comes along, buildings built using it will fall down. We need a plastic eating organism, there is too much waste plastic in the world, and more is coming by the second.

That probably wouldn't be much of a problem for fiber reinforced concrete, since it's fairly alkaline. Likewise plastic building siding would probably still last longer than, say, wood siding does now. Which is to say a very long time.

The existence of common microorganisms that digest a type of material typically only matters in composting-like conditions.

PLA, the now-common corn-based biodegradable plastic, lasts quite a while outdoors in open air. If you compost it, however, it degrades about as fast as a very dense wood.

(Edit: the post originally said PVA, but that was a typo.)