For those of you who don't subscribe to the bimonthly print edition of Foreign Policy, you're missing a great feature: the FP Quiz. It has eight intriguing questions about how the world works.

(Meanwhile, prepare for the Olympics' opening ceremony by taking Slate's national-anthem quiz.)

The question I'd like to highlight this week is:

By how much did opium poppy cultivation change in Afghanistan from 2008 to 2009?

a) up 22 percent      b) remained stable       c) down 22 percent 

Answer after the jump …

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