Our youth feel a comprehensive plan is critical because they see that our climate system is reacting to unprecedented levels of carbon in the atmosphere by behaving in unprecedented ways. (ourchildrenstrust.org)
This is preliminary, not settled, as a potential path for reducing carbon in the atmosphere. (getenergysmartnow.com)
So, are we seeing evidence of more carbon in the atmosphere compared to years, decades past in rocks and organic material? (hubpages.com)