"Unlocking Climate Secrets: A 66-Million-Year Journey Through CO2 History"

An international team of scientists, including University of Utah geologists, has published a study in Science reconstructing Earth's atmospheric CO2 levels over the past 66 million years. Using various geological proxies, they found that current CO2 levels of 419 ppm are the highest in 14 million years, largely due to the burning of fossil fuels. The research aims to provide a detailed record of past CO2 concentrations to better predict future climate scenarios and understand the impact on Earth's history and ecosystems.