Comment That Scientific American figure doesn't help (Score 3, Insightful) 216
You point to that figure and say that solar panels are terrible for the environment. Yes, apparently solar panels need more silver (and other metals) than other generation techniques, however, that doesn't mean that an ABSOLUTELY LARGE amount of silver is going to have to be provided.
Most power generation techniques don't need silver barely at all, so "relative to the current mix",yes, solar is going to need lots. That DOES NOT necessarily mean that supplying that amount of silver is going to cause widespread environmental degradation in the same way that coal DOES.
Also, solar power, once in place, doesn't require megatonnes of fuel like coal, oil, and gas do. (In that order, I guess.)
That figure doesn't DIRECTLY give insight into what energy mix is best for the environment, you can't have any hope of that unless you also compare fuel inputs per kwh generated as well, and other factors.