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 methodology for the Ecological Footprint is detailed but not overly complex. Data inputs are from publicly available national, international and private organizations. A variety of accounting assumptions are made, but they are explicit and always entail a conservative bias.