This will date you: the Marvel No-Prize (and did you advance to the rank of Keeper of the Flame?).
I actually got one of the treasured empty envelopes for having a letter published in Fantastic Four #90.
If I'd had the foresight to hang onto it, who knows what it would be worth today?
OK, for no-prize-at-all-except-bragging-rights, here's a question:
What percentage of all the modern humans who have ever lived is believed to be alive today?
Comments
As for your question, I'm guessing it has to be some miniscule fraction of 1%. By "modern" humans you mean everyone after the Neanderthals, right?
The number who have ever been born is around 106,000,000,000
The world population in mid-2002 was approximately 6,215,000,000
The percentage of those ever born who were living in 2002 was approximately 5.8%
The claim often made in various popular sources that more than half the humans ever born are alive today, is therefore in all probability quite exaggerated.
http://tinyurl.com/sxncl
Wikipedia, I cheat
Aftef I posted, I figured it was some "trick" question. Your figuring looks sound.