Integrated environmental modeling is a discipline of developing a system of models where models from two or more academic disciplines are integrated such that they behave like a unit to external stimuli. At least one of the models in the system is from environmental domain while others may come from other academic disciplines such as the socio-economic domain. The models integrated into the system are usually developed in complete isolation from each other. The U.S. Environmental Protection Agency is launching a new on line tool for scientific collaboration and knowledge sharing that was built by Purdue University with support from the agency. The Integrated Environmental Modeling Hub allows environmental researchers to analyze environmental problems and combine environmental models so that a better understanding of the environment can be developed – everything from keeping beaches clean to predicting climate effects.