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U.S. Letter Rates Since the Civil War

The first U.S. postage stamps were issued on July 1, 1847. At that time, postal rates varied by distance traveled-under 300 miles, letters cost 5 cents per 1/2 oz…

The Resurgence of Abraham Lincoln

Almost 150 years after his death, Abraham Lincoln reemerges as a leading figure in politics and pop culture. by Jennie Wood Benjamin Walker gets into character for the title role of the…

Selected Rap and Hip Hop Musicians

Mos Def See also Notable Women Musicians and Dancers Notable African-American Musicians Notable African-American Visual and Performing Artists Asian American Artists and Musicians…

Why nickels are bigger than dimes

The Question: Why is the dime smaller than the nickel? The Answer: Actually, the first five-cent coin in U.S. history was made of silver and…

Lao Tzu (Laozi)

Biography of the great Chinese philosopher   Lao Tzu (alternate spelling: Laozi), Chinese Philosopher Lao Tzu, fl. 6th cent. B.C., Chinese philosopher, reputedly the founder of Taoism.…

DK Science: Oceans

COASTAL (NERITIC) ZONEOPEN OCEAN ZONESOCEAN CURRENTSTIDESWAVESFIND OUT MOREAbout 71 per cent of our planet’s surface is covered by oceans and seas. In order of size, the five great oceans are…