Elmo is the only non-human to testify before Congress.
Here are 15 people who not only made history, but got to tell the tale for decades.
As wild and vivid as your imagination might be, it likely doesn’t hold a candle to that of Mother Nature.
March 14 is the 136th anniversary of Einstein's birth. Celebrate with these quotes that have nothing to do with E=mc2.
Pi Day offers something for the math-lover and baked-goods lover. What about the word lover?
Expanding water causes the pop...but what causes the jump?
Any high school geometry student worth his or her protractor knows that pi is an irrational number, but if you’ve got to approximate the famed ratio, 3.14 will work in a pinch.
They’re fuzzy, they’re flashy, and they’ve got great moves.
Paige Finch talks bad business.