I find it cool that more people in the world are multilingual than monolingual.
I certainly wish I was able to speak more than one language.  What is the most popular language in the world, currently?
I dont know about the entire world, but in the United States the most widely learned second language is Spanish.
Do you happen to know how many Americans can speak spanish as well as English?
Well about 45 million people in the US speak Spanish, and about half of those say they speak English well, so around 20 million.
I guess I should start studying!
Haha true. Also interesting is that around 6 million people in the US are active students of Spanish