Science

2016 47¢ Uranus
March 13, 1781

Discovery of Uranus 

On March 13, 1781, William Hershel discovered Uranus, the first of the planets to be discovered in modern times.

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1973 8¢ Nicolaus Copernicus
February 19, 1473

Birth of Nicolaus Copernicus 

Nicolaus Copernicus was born on February 19, 1473, in Thorn, Poland. A pioneering astronomer, he suggested that the planets revolve around the sun at a time many believed the planets revolved around the Earth.

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1998 32¢ Organ and Tissue Donation
February 14, 1998

National Donor Day

On February 14, 1998, the first National Donor Day was held in the US. The annual event is held to raise awareness of the need for organ and tissue donations and to honor those who have donated, those who have received donations, and those we lost before donations became available.

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1998 1¢ Weather Vane
February 5, 1744

National Weatherpersons Day

February 5 is celebrated annually as National Weatherpersons Day in honor of Dr. John Jeffries, one of America’s first weather observers. National Weatherpersons Day is held on February 5 to mark Jeffries’s birthday in 1744.

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1976 13¢ Telephone Centennial
January 7, 1927

First Official Transatlantic Phone Call 

On January 7, 1927, men in New York and London staged the first official telephone call across the Atlantic Ocean. Using radio waves, it made instant communication across the ocean a reality, paving the way for our modern communication systems.

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1948 3¢ George Washington Carver
January 5, 1943

Death of George Washington Carver 

Botanist and inventor George Washington Carver died on January 5, 1943, in Tuskegee, Alabama. Carver worked to help poor Southern farmers and is most famous for developing more than 300 uses for peanuts, earning the nickname, “Peanut Man.”

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1907 American Red Cross Christmas Seal - Type II - inscribed
December 7, 1907

First Christmas Seals 

On December 7, 1907, the first Christmas Seals went on sale. The first stamps were created to help save a Delaware tuberculosis sanitarium, but later issues went on to support the Red Cross, National Tuberculosis Association, and American Lung Association.

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2009 78¢ Distinguished Americans: Mary Lasker
November 30, 1900

Happy Birthday Mary Lasker

Health activist and philanthropist Mary Woodward Lasker was born on November 30, 1900, in Watertown, Wisconsin. Lasker campaigned for greater cooperation between scientists and the medical community as well as for government funds to finance research.

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1966 8¢ Prominent Americans: Albert Einstein
November 21, 1905

Einstein’s Greatest Breakthrough

On November 21, 1905, Einstein published a paper that presented one of the world’s most famous formulas — E=mc2.

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