Here's more detail from my googling: http://extensiblefuture.blogspot.com/2016/10/co2-in-atmosphere-one-quadrillion.html http://extensiblefuture.blogspot.com/2

Here's more detail from my googling: http://extensiblefuture.blogspot.com/2016/10/co2-in-atmosphere-one-quadrillion.html http://extensiblefuture.blogspot.com/2016/10/co2-in-atmosphe...