Cheat sheet

There are certain facts that I feel I should know, but I can never remember. Here are a few:

What is the approximate population of the United States?
There are about 318 million people living in the US.

I know penguins and polar bears don't live in the same location, but which ones live where?
Penguins live in the southern hemisphere and polar bears live in the northern hemisphere (except for in zoos and Coke commercials, of course).

How many countries are there in the world?
The answer is up for debate, but by most accounts there are 196 countries in the world.