Sources:

• EPICA Dome C - 800KYr CO2 Data, Composite CO2 record,
  Lüthi, D., M. Le Floch, B. Bereiter, T. Blunier, J.-M. Barnola, U. Siegenthaler, D. Raynaud, J. Jouzel, H. Fischer, K. Kawamura, and T.F. Stocker. 2008. High-resolution carbon dioxide concentration record 650,000-800,000 years before present. Nature, Vol. 453, pp. 379-382, 15 May 2008.
• Trends in Atmospheric Carbon Dioxide, Mauna Loa CO2 annual mean data,
  Dr. Pieter Tans, NOAA/ESRL and Dr. Ralph Keeling, Scripps Institution of Oceanography.

Background image by Agustín Ruiz