A 40-million-year history of atmospheric CO2 | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
CO2 Past
7. Is the current level of atmospheric CO2 concentration unprecedented in Earth's history? Answer | Royal Society
CO2 has been higher in the past
Atmospheric carbon dioxide levels for the last 500 million years | PNAS
What is the statistical relationship between CO2 concentration level and global change in temperature? - Quora
Ups and Downs | CK-12 Foundation
Geological δ⁷Li records, climate and weathering flux (a) Silicate... | Download Scientific Diagram
Future climate forcing potentially without precedent in the last 420 million years | Nature Communications
Model calculation of atmospheric carbon dioxide during the last 600... | Download Scientific Diagram
Carbon Dioxide Through Time | EARTH 103: Earth in the Future
CO2 Coalition on Twitter: "CO2 levels are currently at record low levels compared with those that prevailed over much of Earth's past history. #CO2 #Atmosphere https://t.co/AUuVFKw0nA https://t.co/9dHqqJIlWW" / Twitter
Modelling the long-term carbon cycle, atmospheric CO2, and Earth surface temperature from late Neoproterozoic to present day - ScienceDirect
Historical trends in carbon dioxide concentrations and temperature, on a geological and recent time scale | GRID-Arendal
Carbon Dioxide Through Time | EARTH 103: Earth in the Future
Do high levels of CO2 in the past contradict the warming effect of CO2?
Climate during the Carboniferous Period
TecEco - Geomimicry
CO2 Past
Relationship between sea level and climate forcing by CO2 on geological timescales | PNAS
Graphic: The relentless rise of carbon dioxide – Climate Change: Vital Signs of the Planet
In Geological Terms, Today's Atmospheric CO2 Concentrations Are Still Uncomfortably Low
Here's What Real Science Says About the Role of CO2 as Earth's Preeminent Climatic Thermostat | Discover Magazine
