[dominotw]

That has nothing to do with cost to earth. We just export our pollution to seas and china.

If all countries start living like americans we'd need 5 times the surfaces area of earth.

[thriftwy]

Preserving biosphere is precious. "Cost to earth" is meaningless by itself - the planet isn't going anywhere. The only fragile thing here is biosphere.

I can see that you don't actually value Earth, just pity that it's so small you have to ration it.