If the U.S. vice president must step up and become president, who becomes vice president?
Yep – there is a hidden space behind those famous presidential faces.
Lonesome George, the last of his species of tortoises, died in the Galapagos in 2012. But scientists have now finished analyzing his DNA and found some fascinating clues about giant tortoise longevity.
That means it takes nearly 17 hours for a radio signal, traveling at the speed of light from Earth, to reach Voyager 2.
Say What?!
Ever wonder who thought up the idea of holiday cookie swaps? The idea first came up during World War I, when cookie swaps weren't necessarily tied to Christmas or any other holiday; they were used in bake sales to help raise money.
Explore more in
4 Steps to Safely Ship Holiday Cookies
