I can spend hours at i09.com, especially for bits of information like this:

http://space.io9.com/did-you-know-that-the-saturn-vs-fuel-economy-was-7-inc-935695163/935748020

Granted, a very small bit of information, but to realize that at the time of launch the Saturn V’s fuel economy was a whopping 7 inches per gallon…is rather mind boggling.

And yet it makes perfect sense, given the incredible energy expended at the moment of liftoff.

Now you know.