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Alexander Gode American AMERICAN HUMANIST ASSOCIATION animals April April 18 April 25 astronauts ASTRONOMY atomic biology blood Calif cancer CATALOG cause cells Center chemical chemistry cigarette color Dept developed device disease drug earth electric electronic energy engine equipment Fahrenheit Flint Journal Harlow Shapley heart heat human illus inches Institute kakapo laboratory laser Leonard Carmichael light lung cancer magnetic March March 14 March 21 Medical Medicine ment metal method microscopes miles million moon National Science nuclear ocean operation orbit paper Paperbd particles patent photographs physics plants plastic postage Postpaid problems produced protein Public Health radiation radio radioactive reported rocket satellite School Science News Letter Science Service scientific scientists smoking solar space stars TECHNOLOGY telescope temperature theory tion told Science Service United University Washington weeks York