Ymir's blood not only floods the world and becomes the world's seas and oceans but it also drowns (all but a couple of) the jotuns/giants that were Ymir's descendants.
According to current calculations, the scale of an individual atom (looking at the nucleus and electrons orbiting it) is approximately equal to the scale of our solar system.
Finally a place to dump my otherwise useless trivial knowledge. Nazi Germany was the first country to ban vivisection.
We used to have a fun fact of the day thread, i wonder where that went. The praying mantis is the only insect that can turn its head
“If you are not paying for it, you're not the customer; you're the product being sold.†(via blue_beetle on MetaFilter, I believe)