The plan to suck CO2 out of the atmosphere and use it to rebuild Earth’s coasts
“You’re going to produce, give or take, somewhere in the vicinity of 100 billion tons of limestone if you convert all of the CO2 that we’ve emitted into the atmosphere [in one year] into rock.”
“The processes continue to be extremely energy intensive,” Sant says. “I think we’re still looking at average costs north of $250 per ton of CO2, and this is being very optimistic.”
http://www.digitaltrends.com/features/c ... limestone/
so in other words,...
100,000,000,000 (one hundred billion tons) x $ 250 per ton = $250,000,000,000,000
NOTE
Latest official GDP figures published by the World Bank,... is $80,934,771,028,340 (nominal, 2017) http://www.worldometers.info/gdp/gdp-by-country/
and on the local level (for example my home town) we see unaddressed financial mismanagement issues, that continue building up off balance sheet "debt"
http://www.SanDiegoDebtBomb.com