A White House Role: Physicist Happer *64 Takes Position as Senior Science, Technology Adviser

William Happer *64: Advising on decisions “that really need to get the science and technology right”

Ken Cedeno

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By Louis Jacobson ’92

Published Oct. 12, 2018

2 min read

William Happer *64, a professor emeritus of physics best known for his controversial views on climate change, has joined the White House in a senior science and technology advisory position.

Happer is working for the National Security Council as deputy assistant to the president and senior director for emerging technologies. His job is to try to ensure that important White House policies are based on sound science and engineering. 

Happer began teaching at Princeton in 1980 and served as director of energy research at the Department of Energy under President George H.W. Bush. He made his name in the field of optically polarized atoms and is credited with advancements in eliminating distortion in imaging systems, including those used in missile defense and astronomy.

In recent years, however, Happer has been best known for his contrarian views on climate change — views that mesh with those of President Donald Trump, who pulled the United States out of the Paris climate accord. 

“Climate is important, always has been, but I think it’s become sort of a cult movement in the last five or 10 years,” Happer told The Scientist in 2017.

Most climate scientists say that atmospheric carbon-dioxide levels are rising due to human activities, warming the Earth and driving such worrisome changes as a rise in sea levels and receding ice cover. But Happer sees benefits in the increase in carbon dioxide, notably increased plant growth. Scientists told PAW that Happer isn’t entirely wrong about carbon dioxide promoting plant growth, but they added that any gains are outweighed by larger, more negative consequences.

“Some of the world’s worst weeds respond very strongly to carbon dioxide, and there is now pretty convincing science that the nutritional value of grains is lower with higher carbon-dioxide levels,” said John Reilly, co-director of MIT’s Joint Program on the Science and Policy of Global Change. “Even if [the various trends] balance out or are positive, the broader effects of climate change — excessive heat, drought, wildfires, pest outbreaks, big-precipitation events, and rising sea levels — clearly pose serious risks even if the Earth is a little greener.”

Despite his climate-change skepticism, Happer has said that he supports continued climate-science research. “Many people feel like you ought to junk the whole climate enterprise, but I don’t feel that way at all,” he told The Scientist. “I feel like the information that is gathered is useful. ... Why not understand it better?”

Reached by PAW, Happer, 79, said he would like to comment for this article but was unable to secure clearance from the White House.

In his Scientist interview, Happer promised to be a straight shooter. “I’m a scientist,” he said. “I know a lot about some areas, and I know how to find out about others. I know how to reach out to people who really do know. And I think I could provide the best possible advice, technically related and scientifically related advice, for the administration for policy decisions that really need to get the science and technology right.” 

14 Responses

Barbara A. Ford

4 Years Ago

Failing To Inform

It is noteworthy that you rely on a person who is not a scientist to reduce the importance of Wm. Happer's statements on the benefits of increased carbon-dioxide levels. You must appreciate that your skills as a journalist appear weak. The importance of reporting on a topic is at a minimum to inform your readers, and possibly even learn about the topic yourself. Your article demonstrates neither was achieved.

Graham Turk ’17

6 Years Ago

Alarms Should Be Going Off

Re “A White House Role” (On the Campus, Oct. 24): I believe parts of this article were misleading — specifically, the paragraph that stated “most” climate scientists endorse the theory of anthropogenic climate change and mentioned William Happer *64’s positive outlook on increased CO2 levels.

“Most” could mean 51 percent, from which someone might conclude there is still an active debate in the scientific community. This is the very tactic used by people who want to spread doubt about climate change. In reality there is no debate; 97 percent of climate scientists are in consensus about its cause and catastrophic impacts.

Lending credence to the view that rising CO2 levels will promote plant growth is akin to highlighting optimal swimming conditions after a monsoon. The negative consequences of climate change are in an entirely different stratosphere: sea level rise between 1 and 4 feet, increased severity of extreme weather events, and slashing the U.S. economy 10 percent by 2100. If those sound alarmist, good: The alarms should be going off.

Let’s be clear: Happer is not a climate scientist. His authority on climate change is roughly equivalent to Michael Jordan’s on hockey.

We can reverse global warming if we act fast, but that first requires a universal acceptance of the problem. Happer has sought to undermine that aim, and he now has our president’s ear. He is a dangerous presence in the White House, a fact I had hoped the article would emphasize.

 

Frank Hurley *65

5 Years Ago

In Defense of Happer *64

Graham Turk objects to mention of the views of Dr. William Happer in a discussion of anthropogenic climate change. Turk argues that “there is no debate” and that “97 percent of climate scientists are in consensus” that global warming is human-caused.

The Oct. 31 issue of the journal Nature included a letter that purported to show more dramatically accelerated ocean warming than previous data and models had indicated. (Princeton, as well as Scripps and UCSD, was involved.) This item received a great deal of publicity. Alas, a “math error” was quickly discovered and admitted, and the study’s conclusions were walked back.

So great was the lust of this fraternity to blast another headline that scientific due diligence had not been taken. Once again it has been demonstrated that 97 percent of climate scientists are in consensus that there should be more attention, and more funding, paid to climate scientists.

Editor’s note: Additional letters on this topic and supporting William Happer can be found at PAW Online from Peter Seldin ’76, Richard S. Dillon ’55, Charles M. Hohenberg ’62, William Hayden Smith *66, and William T. Lynch *71.

Kerry Brown ’74

5 Years Ago

In Defense of Happer *64

Graham Turk’s use of “dangerous” to describe William Happer’s science-adviser position in the White House is itself dangerous — to Dr. Happer, who has received threats including, “You are an over-educated Nazi and deserve to hang.” There have also been threats over the years to his faculty standing (which have been commendably dismissed by Princeton). Professor John Christy of the University of Alabama had weapons fired through his office window after hours.

As to substance, I refer to Professor Christy’s congressional testimony showing the very large gap between the actual temperatures of the last 20 years and the forecasts of the computer models, as well as liberal Dr. Hans Rosling’s rebuke of climate alarmism in Factfulness. The 97 percent figure of scientists in consensus is greatly flawed. And the slam against Dr. Happer’s credentials borders on the juvenile. He is a recognized astrophysics expert with discovery of the sodium star (missile-defense and astronomy breakthroughs), past director of U.S. Energy Department research, and former head of our University’s research board, among other accomplishments. To suggest that he might have problems grasping climate science is absurd.

Peter J. Turchi ’67 *70

5 Years Ago

In Defense of Happer *64

In Orwell’s 1984, Winston Smith murmurs that “sanity is not statistical.” This was before he was crushed by the totalitarian state into accepting consensus and loving Big Brother. During the 19th century, before the Michelson-Morley experiment, most scientists probably accepted the concept of the “luminiferous ether.” Did such acceptance make this now-defunct concept true?

By urging that we line up with “97 percent of climate scientists” (Inbox, Jan. 9), Graham Turk ’17 continues the notion that our attention should be immediately focused on eliminating anthropogenic sources of climate change, e.g., fossil fuels. (He furthermore offers an unfortunate ad hominem attack on William Happer *64, whose deep understanding of atomic and molecular physics might actually be quite relevant to radiation transport in the atmosphere.)

It is unlikely in the next few decades that fossil fuels will be displaced as the primary energy source for the global economy, especially in developing countries. Instead, we might hope that during this time climate scientists will refine their models, and other scientists and technologists would devote themselves to carbon-free power. Such power, which is already available as nuclear fission (and may be achieved someday by nuclear fusion) can provide the electricity needed to improve the world’s future economy without destroying the present one.

William Hayden Smith *66, Professor of Earth and Planetary Sciences, Washington University

5 Years Ago

Disputing Consensus

Irving Langmuir, in 1958, wrote an elegant article on “pathological science.” In case Graham Turk does not know who Langmuir is, he was the first industrial scientist to be awarded the Nobel Prize. Further investigation of Langmuir is worthy of Mr. Turk’s time since he was a dedicated scientist. Climate predictions are well within Langmuir’s definition of “pathological science.”

 

Another remarkable scientist and author, Michael Crichton, delivered a clear statement on climate predictions at the California Institute of Technology in January 2003 in which he reviewed the famed but totally empty “Drake Equation.” In his analysis, Crichton addressed the question of “scientific consensus” and demonstrated that it is also an empty concept.

 

The concept of consensus was the same concept that forced Galileo to recant. Being correct had nothing to do with his survival; only agreeing with the consensus allowed him to survive!

 

Today, a similar consensus is at large in the land via the media. The Rico Act is threatened to punish dissenters. First Amendment freedom of speech is suppressed, particularly in universities, and that is true in nearly all universities, not just Old Nassau. 

 

After earning a fortune from six best-selling climate-disaster books, James Lovelock of Gaia prominence announced, during a MSNBC interview in 2012, that he recanted his earlier climate-catastrophe predictions. This he did, not from fear but because “Nothing much is happening.” Lovelock said Al Gore and Tim Flannery “were alarmist, and we should be halfway to a frying planet.” Lovelock is an honest scientist who had the strength to admit he was wrong.

 

Finally, Joseph Silk and Aaron Ellison addressed the pathological-science disease in another context in their December 2014 Nature article. They argued cogently and powerfully that science consists of tested results. Untestable results are not science at all. This reflects Crichton’s statement as well.

 

Climate-model predictions fall in the category of untestable results. Worse, as the predictions are not fulfilled by results, the predictions continue to be propelled by “consensus.” The “results” never reach the public. Sadly, the “results” have not reached the Class of 2017, either, and that is Princeton’s fault.

Charles M. Hohenberg ’62, Professor of Physics (Emeritus), Washington University

5 Years Ago

In Defense of Happer *64

This letter is in response to the letter from Graham Turk ’17 and his criticism of Professor William Happer *64. 

Contrary to Mr. Turk’s opinion, Professor Happer is eminently qualified to comment on climate change, its causes, and its effects.  As the Cyrus Fogg Brackett Professor (Emeritus) of Physics at Princeton; JASON Advisory group; trustee of the Mitre Corp., the Richard Lounsbery Foundation, and the Marshall Institute; chairman and founder of Magnetic Imaging Technologies, where he pioneered the adaptive optics (critically needed for Earth-based astronomy); and presidential adviser, Professor Happer is a critical thinker, a real scientist who follows no one but takes the paths where true science leads. The Earth’s climate is a complex system that is not easy to model, but luckily science does not rely on models without observation and test.  Professor Happer would join me in some of the following observations:

(1) Man has certainly increased atmospheric CO2, but we have no choice except to burn fossil fuels, since we need the energy and there is no alternative right now.

(2) The planet is warming a little (some glaciers do show recession), but the current warming is small (much smaller than most models predicted).

(3) Our CO2 increases cannot cause runaway global heating (as shown below), so we are not on the verge of catastrophe. And contrary to popular belief, the extra CO2 is actually good for plants, not the other way around.  Plants are carbonaceous, and the only source of carbon for them is atmospheric CO2, a necessary plant food. At CO2 levels below about 160 ppm, photosynthesis will not occur and no plants will grow. The atmosphere was very short of CO2 before the Industrial Revolution at 320 ppm (now we are at 400 ppm), fairly close to the critical 160 ppm level for plant growth. Experiments show maximum growth rates occur at CO2 many times our present levels, so although man has certainly increased the CO2 level somewhat in our atmosphere, don’t look a gift horse in the mouth: Plant growth has substantially accelerated (https://farmweeknow.com/story-usda-surprises-trade-again-raises-crop-estimates-new-records-0-179890, and many others).

(4) The Vostok ice cores show that global temperature and atmospheric CO2 content do correlate, but it is the temperature that drives the CO2, not the other way around, as shown by the fact that these cores preserve the time record and temperature changes precede CO2 changes by several thousand years. The effect cannot precede the cause.

Water vapor is the dominant greenhouse gas for our planet, and it is water vapor that warms us about 60 degrees F to a more livable and comfortable climate (a certain location that has a 50 degrees F average temperature would average -20 degrees F without our water-vapor blanket). CO2 is also a greenhouse gas, but it is not nearly as important as water vapor, since its IR absorption bands are much stronger and H2O concentration in the atmosphere is about 100 times that of CO2. However, things are not that simple. CO2 is always a gas while water vapor condenses as clouds, freezes out as ice, and evaporates into the atmosphere depending on a wide variety of conditions. 

So the operation of our greenhouse system, and the planetary climate it impacts, is very complex. It has not been successfully modeled as shown by the multitude of failed models comparing predictions with actual measurements that are now emerging. To show the complexity of our climate, look no further than El Niño and La Niña, subtle changes in the oceans that greatly affect our climate. There are no models that predict their impact, and this simply demonstrates the complexity of our climate and how difficult it is to model.

How does a scientist address a system too complex to model, or test a model that he has constructed? He does the critical experiments to see what happens (truth is always better than theory!). How do we do such an experiment, one that addresses the impact of increased CO2 in the atmosphere, by direct experiment? We are lucky. Our planet has already done the experiment for us, and we can use those results to evaluate the potential effects of manmade CO2 in the atmosphere: 400 million years ago the CO2 content of our atmosphere was 50 to 100 times higher than it is now but the planet was only slightly warmer, so we do not need to worry about a runaway greenhouse effect due to modest increases in atmospheric CO2 from fossil fuels. Moreover, at that time the planet resembled a tropical rain forest, so it was more like the garden of Eden than a wasteland. The vegetation, growing quite well, produced the fossil fuels we see and use today – the coal, the natural gas, and the oil under what is now Saudi Arabia, which was then lush and green but now a desert.

So the experiment has been done and the results are in: No runaway heating, and plants grow better with increased CO2. It would serve us all better to observe the results of real scientific experience (the historical Earth) and respect the views of real scientists like William Happer, not those who promote an unsupported point of view.

Edward Diener ’61

5 Years Ago

How Much Risk Will You Take?

Mr. Hohenberg presents a very impressive list of Professor Happer's credentials, including that he is a "critical thinker, a real scientist who follows no one but takes the paths where true science leads." Let's see examples of credentials and being a critical thinker who follows his version of where true science leads. "Heavier than air flying machines are impossible": Lord Kelvin when he was president of the Royal Society; not bad credentials. In 1884, a PhD student wrote his thesis on his idea that electricity passing through solutions could best be explained if one supposed that atoms or molecules could break up into electrically charged fragments called "ions"; his professors were convinced he was wrong; the student barely passed. (He received a Nobel Prize for his idea in 1903.) Maybe the profs were too fixated on their ingrained beliefs and their creds. That student who was more insightful than his profs was the same Arrenhius who pointed out the existence of a greenhouse effect in which small changes in the concentration of carbon dioxide in the atmosphere could considerably alter the average temperature of a planet; again, he was going where the science leads.

So, let's focus on the data and skip the credentials. Mr. Hohenberg states, "The planet is warming a little (some glaciers do show recession), but the current warming is small (much smaller than models predicted)." Not only are most glaciers receding, Arctic Ocean ice is decreasing, tundra is warming, Greenland and Antarctica are losing ice, etc. Ask those living in polar regions if the warming is small. As far as the experiment done by Earth 400 million years ago proving anything, is there any concern that maybe, just maybe there were other differences, e.g. solar-energy output, distribution of land impacting ocean currents, solar energy flux per unit area (e.g. if much land were near the poles rather than near the equator), amount of land area (above sea level), the rate of CO2 increase relative to the rate that ocean currents move heat to depths, etc, etc. That experiment proves nothing for today's situation.

The trend in increasing global temperature over the past 120 years closely matches the trend in CO2 increase, consistent with science expectations unless there is considerable growth of cloud cover, which hasn't happened. There is a considerable time lag for so many effects related to climate, and some have rather considerable positive feedback (an engineering concern if one is trying for controllability) that it is extremely risky to proceed as we've been doing, given this is the only planet on which we function.

Models of our extremely complex climate system are extremely challenging and apt to be wrong in details. That does not mean the science of Earth warming by atmospheric GHGs is wrong. And we now have higher levels of CO2 than at any time in the past 400,000 years, and are headed higher. Positive feedback, long time constants, complex system, GHGs contribute to global warming: How much risk do you want to take for your future generation? I do not want much.

William T. Lynch *71

5 Years Ago

In Defense of Happer *64

I challenge Mr. Turk to determine for himself the authenticity of the actual process by which the “percent of scientists” number was extracted and embellished upwards to 97 percent of all scientists. Yes, Mr. Turk, that number is challenged and the topic is still an active debate. 

 

Go back to the ’90s (how old was Mr. Turk?) when an overall value of average Watts per square meter (W/m2) per degree Celsius was proclaimed for global-temperature rise. Individual forcing functions (a very proper term) of W/m2 were estimated for a set of known possible parameters. Anything that was unknown was left unknown, and the difference between the proclaimed overall value and the sum of estimates was attributed to CO2 increases. This was the best that could be done, since direct modeling was poor, but a further official prediction of plus 1.0C per plus 100 ppm of CO2 set off the “calamitology” scare in the media. There was apparently a host of scientists, not part of the inner group of selected scientists, who knew that the linearity claim was nonsense. (While working full time elsewhere — not in climatology – I used a simple Occam’s razor approach to show that the dependence was logarithmic, not linear.) The logarithmic dependence was indeed recognized by the official scientists but the official projections of temperature rise per doubling of CO2 were still ominous, with a huge fan spread of possible calamities. Surprisingly (?), the fan of predictions did not even accurately project backward into the years with lower atmospheric CO2. This failure of authenticity has not been acknowledged. And the constantly revised fan projections are still excessive.

 

Let’s move farther through the letter. CO2 is certainly a boon, not a pollutant; there would be no plant life (and no animal life) without CO2. And if CO2 were not an infrared absorber the Earth would be about 7 degrees Celsius colder, but now, correctly or not, we complain. The genuine pollutants are the carbon particulates. If CO2 is a pollutant, then oxygen could also be said to be a pollutant because it causes fires and is used in all explosives. The oceans have been rising by one foot a century for centuries, and so it is senseless to set alarms about that.

 

Present Earth temperatures are increasing by about 0.01C per year (1.0C per temperature). Increased CO2  directly accounts for about 25 percent of the so-called “greenhouse-gases” blanket, H2O atmospheric absorption is less than 25 percent, “other” absorber molecules account for less than 10 percent, and convection from the tropics corresponds to about 50 percent. Without the convection (which is not a greenhouse gas), the temperatures in the temperate zones would be about 7C colder; we would truly be complaining. I wonder if that was mentioned in class. We should recognize a good thing when we have it and not just be making calamity-cum-belief proclamations. And we may be reducing future increases because of coincidental declines within the composite cycles of solar and Earth cycles, and eventually may have a reversal of temperature increases because of a return to another Ice Age. 

 

The last paragraph in the letter reads “we can reverse global warming if we act” quickly but, if a reversal implies, as it must, a removal of CO2 from the atmosphere, then that is likely another incorrect classroom stuffing of the brain. Reducing CO2 to its C and O2 constituents requires a large amount of energy, more energy than the heat energy released when burning C. As long as any of the energy used to serve human needs employs the burning of carbon, then any energy expended to reduce CO2 – whether from alternative fuels or C burning — will increase the level of CO2 in the atmosphere. It’s a false hope to reduce any CO2 in the atmosphere until all energy needs can be provided by alternative fuel. And if at any time we have the capability to convert all human carbon-based energy to alternative energies, then the (conservative) cost of just the storage batteries alone (for today’s power requirements) will exceed $4,000 trillion.

 

Finally, I believe Mr. Turk should make an abject apology to Professor Happer.

Richard S. Dillon ’55

5 Years Ago

In Defense of Happer *64

One need only to use your computer and Google William Happer to find what a distinguished career he has had and to appreciate his expertise in gas  (CO2) spectroscopy. Then one might do a Google search for IPCC fraud, which on Jan. 8 produced about 607,000 results in 0.35 seconds, or a search for global-temperature fraud that produced about 11,600,000 results in 0.47 seconds. The articles clearly cast doubt on a consensus countering Happer’s viewpoints. In regard to CO2 as a greenhouse gas, one might ask how and why does it act. Yes, it reacts with infrared radiation (wavelengths commonly listed as ranging from 0 to 1000uM) in three narrow fingerprint absorption points: 2.9, 4.3, and 15uM. The great bulk of infrared passes by unaffected.

NASA has pointed out that CO2 can protect the Earth from harmful bursts of solar radiation by intercepting it in the upper atmosphere. Again, water in all of its forms (vapor, liquid, and ice) has CO2 absorption bands that overlap that of CO2. The concentration of water vapor is many times that of CO2 in the atmosphere, and in the laboratory, one cannot demonstrate a significant greenhouse effect for CO2 in the presence of water vapor. Hopefully, Trump does pay attention to Happer.

Peter Seldin ’76

5 Years Ago

Forecasting the Economy’s Future

I cannot allow Graham Turk ’17’s letter regarding climate change and William Happer *64 to go unchallenged. In his letter, Turk quotes a government study and writes that climate change will “slash the U.S. economy 10 percent by 2100.” The U.S. economy is expected to be about three times larger on a per-capita basis in 2100 than it is today. Even if you accepted the study’s very aggressive assumptions and the 10 percent impact, that would mean that our economy would be only 2.7 times larger per-person than today’s level. Hardly a “slashing.” Personally, I am skeptical of attempts to predict 80 years in the future with any precision.

Rodney L. Burton '62 *66, professor emeritus of aerospace engineering, University of Illinois at Urbana-Champaign

5 Years Ago

Scientific Skepticism Is Needed

The United States is no longer the principal generator of atmospheric carbon, as is now well known. Global warming is indeed that, a global public-policy question, and not one to be handed over to the high priests of climate science. Dr. Happer's scientific skepticism is exactly the right approach for the National Security Council, before the U.S. engages in a lemming-like rush to throw tens of trillions of dollars at the issue.

Graham Turk ’17

5 Years Ago

In Response to My Critics

Many thanks to those who responded to my Jan. 9 letter for engaging in this important conversation. I believe that conversation is the best way to work through our disagreements. But let us not mistake conversation for debate; facts cannot be debated.

Yet debate is exactly what these alumni erroneously sought. They employed tactics like cherry-picking, misleading claims (e.g. there are no alternatives to fossil fuels; the climate is simply too complex to model), and patronizing derision on the basis of my age (“How old was Mr. Turk in the '90s?”) to distract from the issues at hand.

Tactics like these have been used for decades by fossil-fuel companies to cast aspersion on legitimate research and sow doubt in people’s minds. The false notion of serious disagreement among scientists about the causes of climate change has contributed to the current policy paralysis. The longer we allow people like William Happer *64 to obfuscate the facts, the less time we will have to reverse the damage.

The issue isn’t what I or William Happer say but what such bodies as the National Academy of Sciences or the Intergovernmental Panel on Climate Change (IPCC), which truly represent the scientific consensus, have said. The Academy, the IPCC, and nearly every national academy worldwide agree that climate change is happening, human-driven, and a serious threat to our well-being. With such a strong consensus, who should governments listen to? I think the members of the IPCC and National Academy have little self-interest in conveying the dangers of climate change, compared to what those who profit from the fossil fuel industry have in denying its urgency.

On that point, readers should be aware that two of the critics of my article, Charles Hohenberg ’62 and William Hayden Smith *66, are members of the CO2 Coalition, the nonprofit that William Happer founded. In 2017, the group reportedly received $170,000 from the Mercer Family Foundation and more than $33,000 from the Charles Koch Institute, according to federal tax filings obtained by the Climate Investigations Center and cited by The Washington Post. In addition, Happer testified in 2018 that Peabody Energy, the largest private-sector coal company in the world, donated between $10,000 and $15,000 to the CO2 Coalition on his behalf in exchange for his testimony. Emails obtained by the Natural Resources Defense Council revealed that the organization was strongly supportive of former EPA director Scott Pruitt’s “red team blue team” plan to stage public debates on the veracity of climate change. As The New York Times reported, Pruitt’s views on climate change (that carbon dioxide is not the primary contributor and that the extent to which humans are responsible is unknown) were refuted in a recent study issued by 13 federal agencies that found that more than half of the temperature rise in the past half-century can be attributed to human activity. It is worth noting that Pruitt was recently reported to be in discussions to consult for coal-industry executive Joe Craft.

Kerry Brown ’74, another critic of my piece, is the director of the Spark of Freedom Foundation, which advocates for natural-gas development (along with, commendably, hydro and nuclear energy). Peter Seldin ’76 is a general partner at a hedge fund called Centennial Energy Partners that has invested in fossil-fuel companies including Compton Petroleum Corp., Tesco Corp., and GMX Resources.

Because I imagine their next move will be to call into question my motivations, I will save them the trouble. I want to ensure that future generations of humans can continue thriving. The extent of my relevant financial interests is as follows: I work at a regulated electric utility in Vermont, where my salary is fixed, and my employer-provided 401(k) plan is an S&P 500 index fund that includes various energy-company stocks.

I stand by my statement that William Happer is a dangerous presence in the White House. This has nothing to do with his character or his distinguished career as a physicist. But his misguided views on carbon now have the potential to shape federal policy in the opposite direction we need to be going, namely toward substantially reduced emissions. Happer is no longer just Trump’s senior science adviser (On the Campus, Oct. 24); he was recently appointed to chair a White House committee tasked with delivering its own assessment on the risks posed by climate change.

Lastly, I was amused that Kerry Brown called my argument “juvenile.” I wondered if he would have used the same word if the number after my name was '67 and not '17. I am not sure what my age has to do with an ability to respect the wisdom of thousands of renowned climate scientists. My age does, however, have a great deal to do with how I will experience the consequences of climate change, the result of attitudes perpetuated by the writers who defended Happer. It’s time to discuss solutions, not the existence of a problem.

I invite these alumni to reach out directly to me at gturk@alumni.princeton.edu if they would like to continue the conversation. I am happy to point them to the relevant peer-reviewed research.

Stephen E. Silver ’58

6 Years Ago

Drawing a Distinction

I note with amusement that the physicist William Happer *64 is described as being known for his "climate-change skepticism." It is important to draw a distinction between a climate-change skeptic and a climate-change denier. A skeptic is a person who has dispassionately examined the relevant studies and found enough faults in them to justify his skepticism. If his "skepticism" is based on personal bias and on his ability to find those few studies which conform to his bias, he is not really a skeptic, but a denier.  Dr. Happer should feel quite at home in President Trump’s circle. 

 

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