Far more of the silicon (from sand) goes into concrete and glass, though. And it's not like we're short on hydrocarbons. From what I can gather, the total yearl

Far more of the silicon (from sand) goes into concrete and glass, though. And it's not like we're short on hydrocarbons. From what I can gather, the total yearly worldwide production of concrete is tens of billions of metric tons, fossil fuels are billions of tons, and silicon is millions of tons -- barely a blip on the radar.