So more people, eating more stuff, and richer stuff, and of course having an energy crisis at the same time, where we have to replace oil with other energy sources that will ultimately have to include some kinds of biofuels and bio-energy sources.
Więcej ludzi je coraz więcej i coraz lepiej, a jednocześnie trwa kryzys energetyczny, bo musimy zamienić ropę  na inne źródła energii. Musimy uwzględnić użycie biopaliw czy biomasy.