MELVIN CALVIN, Ph.D., D.SC.
The particular sequence of thoughts indicated by the title has its origin in my interest in the process of photosynthesis. It began when I asked myself the question: Which came first, the plants or the animals? This question had been answered in a variety of ways, but one can't help but wonder, as one learns more and more about the detailed mechanism by which living organisms store energy and use it, how they got started in the first place. Actually, these thoughts began long before we heard of Sputnik and all of its successors. However, the fact is that it
CALVIN M. THE ORIGIN OF LIFE ON EARTH AND ELSEWHERE12. Ann Intern Med. 1961;54:954–976. doi: 10.7326/0003-4819-54-5-954
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Published: Ann Intern Med. 1961;54(5):954-976.
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