Pretty much the only interesting one is why don't don't get scurvy because they don't eat fruits.
Incidently, everything2 is another one of those sites where you can get lost for hours endlessly clicking on mildly interesting links:
- How to win a knife fight
- Sword fighting insults
- Are you pondering what I'm pondering?
- How to enjoy The Family Circus
- The guy who may as well already be dead and therefore doesn't care about the consequences of his actions and is able to move with perfect freedom for the remainder of what will likely be a tragically short life