Comment by RC_ITR
3 days ago
Do you have this same concern about literally every structure man has ever constructed?
They do the same exact thing in terms of 'slowing wind down' and 'preventing the sun's energy from reaching the ground'.
This idea is understandable, but it falls apart for the same reason the wind turbine bird death concern does (the number of birds that have died due to humans liking windows is 1,000,000x the number that have died in turbines).
> Do you have this same concern about literally every structure man has ever constructed?
To a lesser extent, yes. However, power generating facilities are different in that they are intended to remove as much energy as possible, whereas sky scrapers etc are not.
This is exactly why science education is so important.
But if it makes you feel better, all man made structures combined cover a small fraction of the earths surface people tend to be in areas with other people and thus it looks like we’re doing more than we are. NYC for example has 291x the average population density of the rest of the US and that’s including over a square mile devoted to Central Park.
Agriculture has a bigger impact because it cover so much land, but that’s offset by it being relatively close to nature.
Cities probably have a significantly larger effect on the way that energy flows around the earth than renewable power generation does. It's relatively easy to change how much a very large amount of heat moves in comparison to how easy it is to harness energy into usable work. (See also why the greenhouse effect from CO2 emissions is such a big deal in comparison to basically any other thing that humans have done, as far as the energy balance of the earth is concerned. CO2 is responsible for about 20 times more energy being absorbed by the earth than humanity uses in total, from any source)
Sure, but again, wind turbines are on the scale of millions whereas there are tens of billions of structures swaying in the breeze.
I get your point, but a 1,000x+ difference in quantity cannot be ignored.