Presidents of the United States of America at the Nationals Games

The presidents run races in between innings at the Nationals games in Washington, D.C.

They also throw t-shirts to the crowd.

I am sure after a game there presidents' approval ratings couldn't be higher!

How well do you know our National Parks - quiz

Mental Floss has a National Park quiz. I was helped because I had been to some of the more obscure ones in the quiz.

I got an 80%, while the average is 67%. I am sure you can do better.

Take the Quiz: National Parks