ADDENDUM TO: EAT PUMPKIN NOW!!

Web MD has reported that the Pumpkin used in question was not our orange American pumpkin, but was an Asian pumpkin, which looks a little different Here is what was said:

"First, the scientists bought whole, mature Asian pumpkins — popularly called shark fin melon or Siam pumpkin — at a Shanghai market. Those pumpkins don't look like the orange pumpkins common in the United States. Instead, they've got a green and white rind."

You probably can find this in your local Chinatown produce market.