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.
It represents the amount of productive land area needed to produce the resources (food, energy and materials) and to absorb the wastes produced by an individual. Since 1980, the. average per capita ecological footprint has decreased as many processes (especially crop. production) have become more efficient.