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.
A number of NGOs offer ecological footprint calculators (see Footprint Calculator, below). Methodology. The ecological footprint accounting method at the national level is described in the l Footprint Atlas 2010 or in greater detail in the Calculation Methodology for the National Footprint Accounts.