Abelson was outspoken and well known for his opinions on science. In a 1964 editorial published in Science magazine, Abelson identified overspecialization in science as a form of bigotry. He outlined his view that the pressure towards specialization beginning in undergraduate study and intensifying in PhD programs leads students to believe that their area of specialization is the most important, even to the extreme view that other intellectual pursuits are worthless. He reasoned that such overspecialization led to obsolescence of one's work, often through a focus on trivial aspects of a field, and that avoidance of such bigotry was essential to guiding the direction of one's work.[7]
In a 1965 article he described his work in paleobiology and reported evidence of amino acids recovered from fossils hundreds of millions of years in age and fatty acids in rocks dating over a billion years old.[1] He estimated that based on his experiments alanine would be stable for billions of years.
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Perhaps his most famous work from this time period is an editorial entitled "Enough of Pessimism" ("enough of pessimism, it only leads to paralysis and decay"). This became the title of a 100 essay collection.[12]
During the 1970s he became interested in the problem of world energy supplies. Books on the topic include Energy for Tomorrow (1975), from a series of lectures at the University of Washington, and Energy II: Use Conservation and Supply. He pointed out the possibilities of mining the Athabascan tar sands, as well as oil shale in the ColoradoRockies. In addition, he urged conservation and a change of attitude towards public transit.[13]
After 1984, he remained associated with the magazine. Some have claimed him to be an early skeptic of the case for global warming on the basis of a lead editorial in the magazine dated March 31, 1990, in which he wrote, "[I]f the global warming situation is analyzed applying the customary standards of scientific inquiry one must conclude that there has been more hype than solid fact." However, this contrasts what is said in a US National Research Council, Energy and Environment report on which his name appears along with Thomas F. Malone over a decade earlier in 1977:
What is important is not that there are differences [in the models] but that the span of agreement embraces a fourfold to eightfold increase in atmospheric carbon dioxide in the latter part of the twenty-second century. Our best understanding of the relation between an increase in carbon dioxide in the atmosphere and change in global temperature suggests a corresponding increase in average world temperature of more than 6°C, with polar temperature increases of as much as three times this figure. This would exceed by far the temperature fluctuations of the past several thousand years and would very likely, along the way, have a highly significant impact on global precipitation.
— Philip H. Abelson, Thomas F. Malone, Cochairmen, Geophysics Study Committee[14]
^"A Stepchild of Science Starts to Win Friends". U.S. News & World Report. 1978-07-31. pp. 41–42. Archived from the original on January 21, 2017. Retrieved 2017-10-14. Philip H. Abelson, editor of the authoritative journal Science, agrees that parapsychological research has improved markedly, but he is dubious about the results. "These extraordinary claims require extraordinary evidence," he contends.
^Rao, K.R., 1978, Psi: Its place in nature. Journal of Parapsychology vol 42.