Nobody believes the production of windmills goes without pollution.
Nor does the production of any other power generating device.
As for the steel, just today Tata Steel announced its
HIsarna ironmaking plant has successfully reduced CO2 production by 50%.
The HIsarna process combines two stages in the reduction process in one and can run continuously.
Cheaper and cleaner steel. That may lead to a shift toward full iron and away from concrete construction.
It won't solve all the worlds problems at once, but it is a step in the right direction. It would shave several tons of CO2 off your equation.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gmeter or 0.13 Mmile.
For confirmation go to people just like you.
For education go to people unlike yourself.