Carbon dioxide in the earth’s atmosphere is at a level that is unprecedented in human experience. University of Dayton professor Bob Brecha explains how we know that we are responsible for the excess CO2.
Carbon dioxide, or CO2 is an important natural part of our atmosphere. Right now, CO2 levels are increasing rapidly. How much of this is part of a natural cycle or is it due to humans? Scientists know how to answer this question.
Scientists around the country are ringing alarm bells about climate change, and some of the effects are already hitting the Dayton area. A local study of attitudes on climate change finds many people are concerned, but it also finds people are not sure what to do about climate change nor confident that it will be addressed.
The controversies generated by climate science in recent years center around the human relationship with the natural world and with natural resources. This month, historian John Brooke puts that critical question in historical perspective—deep historical perspective. For most of human history, our species had to struggle to survive powerful natural forces, like climate and disease. In the past three centuries, however, things have changed dramatically: that struggle has been reshaped by the unprecedented growth of the human population—from under one billion to now over seven.