A study by Dana Royer, assistant professor of earth and environmental sciences, has established a calculable relationship between increases in CO2 and global surface temperatures. Posted 04/02/07 The connection between CO2 concentrations and increased global temperatures just gained a significant amount of evidence - about 420 million years worth of evidence, to be specific. In a paper published in the March 29 issue of Nature, Dana Royer, assistant professor of earth and environmental sciences, and two colleagues from Yale University have used nearly 500 data points to create the most comprehensive model of the relationship between CO2 and temperature to…