Don,


"Heavy metals? What heavy metals?"



Yes heavy metals. You know, the ones like cadmium that cause developmental problems and birth defects.

From the article you posted:
"Even though thin-film solar PVs employ heavy metals such as cadmium recovered from mining slimes, the overall toxic emissions are "90 to 300 times lower than those from coal power plants," the researchers write in Environmental Science & Technology."

The problem that they DO NOT talk about is concentration- the difference between a ton of cadmium in a million tons of coal over 30 years vs 6 pounds in a 30 pound panel is significant- and there is cadmium pollution both in production and at end of life.

If you don't think concentration matters, I have a large gold mine with proven reserves of thousands of tons of gold to sell you- The Pacific ocean. Just send me a check...