The Weight of Nations

I thought this article was interesting enough to highlight it from the "Articles" page.  It talks about the average weight of certain populations and uses that country's population numbers to calculate the % weight of the entire world.  The article highlights two countries:

Source: NASA

Asia has 61% of the world's population, but their average weight is low so it takes up only 13% of the world's total biomass.

North America however, has 6% of the world's population, but takes up 34% of the total biomass.  This is due to an  18.7 kg increase in average mass for this continent over the average 62kg of the world.







Source