State Of Knowledge EPA

This article explains whats known, Whats likely to happen, and Whats not certain.
Scientists believe that the composition of Earth's atmosphere has been changed because of human activities. Humans are also a huge cause of the atmospheric buildup of CO2 and other greenhouse gases because of such things as the burning of fossil fuels. Then again there are other things such as increasing greenhouse gas concentrations. Scientists concluded that the observed increase in anthropogenic greenhouse gas concentrations has been the one of the reasons for climate and temperature change. But then again it is not proven. Scientists can just believe in a theory. Scientists conclude that as the greenhouse gas concentrations rise the sea levels and temperatures will increase as a result. In addition precipitation patterns will change. There are still uncertain questions such as how fast the global crisis will hit or how the warming will affect the rest of the climate system including precipitation patterns and storms. There are multiple questions that scientists still needs to understand. So in the mean time they will just assume there theory is right.