If they didn't want to confuse everyone then why use the metric numbers that most Americans don't have a clue about?  As for the Pesticides, which they did put in pounds, they negated to mention that today there are tens of million more acres in production then there was twenty years ago.  So naturally if there are more acres then more pesticides will be applied.  The graph about which herbicides have increased is misleading as well, because it doesn't show the ones that have disappeared over the last twenty years thanks to the increase in glyphosate.