AN APPEAL BY AMERICAN SCIENTISTS TO THE
GOVERNMENTS AND PEOPLE OF THE WORLD

WE, the American scientists whose names are signed below, urge that an international agree-
ment to stop the testing of nuclear bombs be made now.
Each nuclear bomb test spreads an added burden of radioactive elements over every part of
the world. Each added amount of radiation causes damage to the health of human beings all
over the world and causes damage to the pool of human germ plasm such as to lead to an increase
in the number of seriously defective children that will be born in future generations.
So long as these weapons are in the hands of only three powers an agreement for their control
is feasible. If testing continues, and the possession of these weapons spreads to additional
governments, the danger of outbreak of a cataclysmic nuclear war through the reckless action of
some irresponsible national leader will be greatly increased.
An international agreement to stop the testing of nuclear bombs now could serve as a first
step toward a more general disarmament and the ultimate effective abolition of nuclear weapons,
averting the possibility of a nuclear war that would be a catastrophe to all humanity.
We have in common with our fellow men a deep concern for the welfare of all human beings.
As scientists we have knowledge of the dangers involved and therefore a special responsibility
to make those dangers known. We deem it imperative that immediate action be taken to effect
an international agreement to stop the testing of all nuclear weapons,

Linus Pauling
Barry Commoner
Edward U. Condon
Charles D. Coryell
Leslie C. Dunn
Viktor Hamburger
Michael Heidelberger
I. H. Herskowitz
Herbert Jehle

Martin Kamen
Edwin C. Kemble
I. M. Kolthoff
Chauncey Leake
S. E. Luria
Max Mason
Carl V. Moore
Philip Morrison
Hermann J. Muller

Severe Ochoa
C. C. Price
Arthur Roberts
M. L. Sands
Verner Schomaker
Laurence H. Snyder
Oswald Ve blen
M.B. Visscher
W. H. Zachariasen

List additional signers below, and on the reverse side of this sheet. Please air maiI to -
   Linus Pauling, 3500 Fairpoint Street, Pasadena, California, to arrive by DEC. 1, 1957.

NAME

(Please print or write legibly)

PROFESSION

CITY