My publication The Impact of human CO2 on atmospheric CO2 – edberry.com supersedes my Preprint #3 below. Download Excel file here. Comments by scientists: Dr. Richard Courtney wrote in his email to global-warming-realists@googlegroups.com on November 21, 2019: Dear Ed,  I again provided my 2008 paper as an attachment to an email earlier today.  Its conclusion … Continue reading Preprint #3: A new carbon cycle model shows human emissions cause 25% and nature 75% of the CO2 increase