Last month, the world's population reached the six-billion mark. What do you think of this landmark?

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  Decades ago, those guys in Zero Population Growth said the planet was critically overpopulated at 3.5 billion. Guess that shows them.

  Bill Cardassian
  Cab Driver

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  At least we humans are doing a better job than those ants.

  Carl Turner
  Podiatrist

• 

  Thank God. I was wondering how we were going to staff all those new Old Navys, Targets and Barnes & Nobles.

  Ben Magadan
  Carpenter

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  Six billion? And you know where all of them are? In the goddamn checkout line in front of me, that's where.

  Alexander Ormond
  Systems Analyst

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  And of those six billion, only 10, maybe 11 tops, are cool.

  Jill Eppard
  Student

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  Nothing is more precious than teeming, overpopulated, resource-destroying human life.

  Felicia Mott
  Bank Teller