Using more resources than are available is a lot like spending more than you earn - it catches up with you.

Americans are using twice the renewable natural resources and services that can be regenerated within the country's borders, and creating more carbon dioxide than can be absorbed in the atmosphere. This demand for resources, or ecological footprint, is one of the highest in the world, according to a report by the Global Footprint Network, which says that resource consumption and availability varies dramatically from state to state.

To live within the means of our planet's resources, each person on the planet needs only about 1.7 global acres (about 4.2 U.S. acres) of land to sustain them. The average eco footprint per person in the U.S. is 10 times that - 17.2 global acres - and the country's biocapacity (available resources) is 9.3 global acres per person.

The eco footprint of each state is calculated based on biocapacity of a state, its population, and how much its residents use. It also accounts for imports and exports as well as what its economy produces - such as coal and oil.

Based on the "State of the States" report by the Global Footprint Network, these are the states with the largest per-person ecological footprints: