Do You Know?
National Guard Bureau
WASHINGTON, Apr. 23, 1998 What do you call a group of toads?
Who was the only president to also serve as chief justice of the United Staes?
William Howard Taft
What is the deepest lake in the United States?
Crater Lake, Ore.
Where does the term Mach, used to describe supersonic speed, come from?
Ernst Mach, a Czech-born, Austrian physicist, who contributed to the study of sound
What is the most abundant mineral in the human body?