Stamp of the
Month
NEW YORK — The U.S. Postal Service
acknowledges the contributions of some of the most
impressive scientific achievements of the 20th
century with the issuance of its second series of
American Scientists stamps.
The four scientists appearing on the stamps are:
Biochemist Gerty Cori (1896-1957), in
collaboration with her husband, Carl, made important
discoveries — including a new derivative of glucose
— that elucidated the steps of carbohydrate
metabolism and became the basis for our knowledge of
how cells use food and convert it into energy. Their
work also contributed to the understanding and
treatment of diabetes and other metabolic diseases.
Gerty Cori’s stamp shows the incorrect formula. A
line is incorrectly drawn to the second “O” in an
“OPO 2-/3” near Cori’s face. It should have been
drawn to the first “O” in the “OPO”. The Postal
Service regrets the error but will not recall the
stamp.
Structural chemist Linus Pauling (1901-1994)
determined the nature of the chemical bond linking
atoms into molecules. He routinely crossed
disciplinary boundaries throughout his career and
made significant contributions in several diverse
fields. His pioneering work on protein structure was
critical in establishing the field of molecular
biology and his studies of hemoglobin led to many
findings, including the classification of sickle
cell anemia as a molecular disease.
Astronomer Edwin Hubble (1889-1953) played a
pivotal role in deciphering the vast and complex
nature of the universe. His meticulous studies of
spiral nebulae proved the existence of galaxies
other than our own Milky Way, paving the way for a
revolutionary new understanding that the cosmos
contains myriad separate galaxies, or “island
universes.”
Theoretical physicist John Bardeen
(1908-1991) co-invented the transistor, which was
arguably the most important invention of the 20th
century. Bardeen also collaborated on the first
fundamental explanation of superconductivity at low
temperatures, a theory that has had a profound
impact on many fields of physics. He remains the
only person ever awarded two Nobel Prizes in
physics.
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Melissa Data
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