Know It All Archives

Know It All: Why is Bird Poop White?

It covers your car, the sidewalks and your mouth -- if you've ever closed your eyes, looked up and opened wide like your sister told you to -- but why is bird poop a different color than almost every ... [more]

Know It All: Why Does NASA Launch Their Shuttles from Florida?

For all the trouble NASA has with weather delays by basing shuttle launches out of Florida, there must be a good reason why they don't move to, say, Southern California...right?

Know It All: The Origins of Pi

You probably remember pi from 7th grade math class as a magical number discovered hundreds of years ago used for calculations involving circles... But why the symbol? Who discovered pi? How many ... [more]

Know It All: What’s the Fastest Speed Ever Achieved By a Human Being?

We all want to get from Point A to Point B faster. But do you know the vehicular speeds of which our world is capable? Buckle up and get familiar.

Know It All: What’s the Scientific Term for “Booger”?

You are intimately familiar with boogers; the two of you have shared many private moments. But did you ever care enough to learn their proper name?

Know It All: Why Do Some American Coins Have Ridges Around the Edge?

Ever wondered why the edges of quarters and dimes look different than the edges of nickels and pennies? Well, wonder no more.

Know It All: What is the Longest Running American Television Show in History?

You watch it everyday but do you have any idea which programs have earned plaques in the Television Longevity Hall of Fame?

Know It All: How Many People Have Walked on the Moon?

Everyone knows Neil Armstrong walked on the moon. Well, he may have been the first but he certainly was not the only man to ever set foot on an astronomical object other than the Earth.

Know It All: When Did Refrigerators Become Common in Households?

You probably couldn't live without it but do you know when the modern refrigerator started popping up in households around the world?