1 It is known that Geronimo is adopted, as explained in Kingdom of Fantasy II. 2  In the 2004 book La vera storia di Geronimo Stilton, it is mentioned that Geronimo doesn't know who his actual parents are, and that he was adopted by the Stiltons when he was at infant age.
The ecological footprint is a measure of human demand on the Earth's ecosystems, the amount of natural capital used each year.
The average US ecological footprint is 50% larger than the average person in most European countries in part because the US has more suburban sprawl, less public transportation, and uses more energy and water per person than most other developed countries.