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 'ecological footprint' of the USA is about double that of the EU for about the same population, and is nearly four times that of China (which has nearly four times the population, (and so the ecologicical impact per person is just about 14 times as high in the USA, compared to China).