Abstract: There is much concern about global warming of the Earth caused by increasing concentrations of greenhouse gases produced by human activities such as the burning of fossil fuels and deforestation. There is also concern water and air pollution that are a byproduct of human activities. The invention comprises a method and system that quantifies and provides feedback regarding an environmental impact of all planned or completed activities associated with an entire trip including the impact of transportation, hotel, restaurants, and recreational activities. It further allows the traveler to offset the negative environmental impact by paying a corresponding amount of money to an organization associated with improving the environment.