In what may be no surprise to anyone, the ecological footprint of humans on earth has continued to increase over the last half century. As the population has increased, so has the amount of land and resources needed to fulfill humanity's needs and handle its waste. As incomes have risen, so too has the demand for additional resources. The ecological footprint is a measure of the total land and/or fishing grounds needed to satisfy people's activities. In its 2012 Living Planet Report, the The World Wildlife Fund has graphed and mapped the per capita ecological footprint by country—using numbers calculated by the Global Footprint Network.