I = PAT that human population may stabilize at around 11.2 billion in 2100, the I=PAT equation will continue to be relevant for the increasing human impact on the environment in the short to mid-term future. Increased population increases humans' environmental impact in many ways, which include but are not limited to: The variable A, in the I=PAT equation stands for affluence. It represents the average consumption of each person in the population. As the consumption of each person increases, the total environmental impact increases as well. A common proxy for measuring consumption is through GDP per capita. While GDP per capita measures
Per Capita Per Capita Per Capita is an independent progressive Australian think tank. The think tank was launched on 11 April 2007 by Will Marshall of the US Progressive Policy Institute and Patrick Diamond of the UK’s Policy Network. As a progressive, centre-left think tank, Per Capita's approach is to view the role of government as a market designer: setting parameters for a liberal economy to produce better social outcomes. Per Capita's thinking draws on market design theory, full-cost economics, behavioural economics, and political philosophy. Per Capita is recognised as a leading think tank of the centre-left in Australia, with a more