What is Sam Ruben?
'''Samuel Ruben''' (born '''Charles Rubenstein''', November 5, 1913 – September 28, 1943) was an American [[scientist]] who discovered more things about [[photosynthesis]]. With [[Martin Kamen]], he co-discovered the [[Chemical synthesis|synthesis]] of the [[isotope]] [[carbon-14]] in 1940. {{DEFAULTSORT:Ruben, Sam}} [[Category:1913 births]] [[Category:1943 deaths]] [[Category:Scientists from California]] [[Category:American biochemists]] {{US-bio-stub}}