The Science of Climate Change
Global Warming Causes and Trends
A large number of scientists believe that human activities, which have increased atmospheric concentrations of carbon dioxide (CO2) by one-third over the past 100 years, are leading to an increase in global average temperatures. However, the science of "global warming" is not without challengers, who argue that scientific proof is incomplete or contradictory and that uncertainties remain about the nature and direction of Earth’s climate. Nevertheless, there is significant concern that human activities, such as the burning of fossil fuels, industrial production, deforestation, and certain land-use practices are increasing atmospheric concentrations of CO2 that, along with increasing concentrations of other…
