[GreenKeys] teletype motor with the 'night light' on it, and OTHER flickering lights

[Dave Horsfall]

On Mon, 29 Feb 2016, hwhall at compuserve.com wrote:

> >Coal is dead; solar/wind/water/etc is resource-free, after all.
> 
> But not completely. None of those are possible without mining, too, for 
> metals. The rarer metals necessary for solar cells need more 
> exploration, more digging up the land & more mine & smelting waste to 
> clean up. Plastics for cheap parts & for insulation require petroleum. 
> Hydro dams drown huge swaths of land (a resource). Solar cell farms also 
> take large pieces of land out of other uses. There's no such thing as a 
> free lunch. :-)

OK then, TNSTAAFL, as Heinlein used to say :-)

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."