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sand dollar

(Encyclopedia) sand dollar, common name for a marine animal in the same phylum as the starfish (see sea star). The sand dollar has a rigid, flattened, disk-shaped test, or shell, made of firmly…

Dollar Sign

The Question: Where did the dollar sign originate? The Answer: Based on the study of old manuscripts, it appears to have originated with an abbreviation for "pesos." In revolutionary times-…

Million Dollar Bill?

The Question: Is there a million dollar bill? If so, whose picture is on it? The Answer: Sorry to disappoint you, but the largest bill ever…

Sacajawea Golden Dollar

The Sacagawea Golden Dollar The first new coin of the millennium Source: The U.S. Mint The Sacagawea Golden Dollar coins debuted in January 2000. The new dollar coin replaced the Susan B.…

Million-Dollar Math Problem

Million-Dollar Math Problem In 2000, the Clay Mathematics Institute of Cambridge, Mass., identified seven math problems it deemed the most “important classic questions that have resisted solution…

Susan B. Anthony Dollar

Library of Congress Susan B. Anthony (1820-1906) is the first woman to appear on U.S. coinage. Anthony worked for nearly 70 years to bring suffrage (the right to vote) to women in the United…

Why make dollar coins?

The Question: Why does the US keep introducing dollar coins even though nobody seems to use them? The Answer: It does seem pointless at first…