Recently, a group of Polish scientists from the University of Lublin, led by Dr. Jan Kubicki, published a study that could revolutionize our understanding of the effects carbon dioxide (CO2) to the earth's atmosphere. These researchers argue that the Earth's atmosphere is now "saturated" with CO2, meaning that further increases in this gas would not lead to an increase in global temperatures. Research suggests that although current CO2 levels are around 418 parts per million (ppm) , exceeding the 400 ppm threshold would not lead to further warming. Researchers have looked in depth at the relationship between CO2 concentration and global temperature rise and have concluded that the greenhouse effect caused by this gas is no longer a significant warming factor above a certain saturation level. ( LUISY BRUNOVA, sea at meteogiornale.it )