CO2 and Diamonds about the same cost

TCS: Tech Central Station - Why Diamonds are Like Greenhouse Gases. At least that is one interpretation of EIA's study on reducing greenhouse gas emissions says. For $125 billion/year we can cut the increase in GHG from 38% to 29%. Think I'll take my carbon purchases in the form of the crystalline stuff. At least it has some value and will do some good when I try to sell it back.