A new "60 Minutes" / "Vanity Fair" poll recently asked Americans what they worry about the most.  Is it another world war . . . a nuclear accident . . . an oil shortage . . . or an alien invasion?

The world war came in first, and a nuclear accident came in second.  And we COULD spend our time analyzing that . . . or we could focus on how "alien invasion" DID get some votes.

The exact totals weren't released, but "alien invasion" did NOT get 0%.  Meaning that there ARE people out there who believe one really is coming.

The survey conducted by Baltimore Sun also found the three pieces of mail Americans dread the most are, in order, a jury duty summons, a letter about their mortgage, and a credit card statement.