1941 - Mount Rushmore was declared complete after 14 years of work. The national memorial features 60-foot-tall depictions of the heads of Presidents George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln.
Fact of the Day
World War II Spitfires only had about 20 seconds of "gun time" before running out of ammo, making most movie depictions of it wildly inaccurate.
Nature Oddities
Gophers can close their lips behind their front teeth, which allows them to dig and chew roots underground without getting a mouthful of dirt.
Food and Drink
Before baking powder and baking soda were invented in the mid-19th century, early American biscuits weren’t fluffy. Cooks had to pound the dough with a mallet for up to an hour to squeeze air into it, creating a hard, cracker-like texture.