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Climate Scientist Rallied to the Edge and Beyond
Peter Gleick, a water and climate analyst at the Pacific Institute and member of the National Academies, has admitted in a blog post at the Huffington Post to having obtained and forwarded to journalists the leaked documents from the Heartland Institute. Andrew Revkin has more discussion at Dot Earth as does Bryan Walsh at Time.com.
The incident is the latest in an escalating spiral of polarizing warfare between self-described "Climate Hawks" and so-called Climate Deniers. Caught in the cross-fire are the great majority of scientists and members of the public who yearn to work together in their communities, regions, and nationally to find common ground.
Urgent calls to escalate the war against climate skeptics may lead scientists and their organizations into a dangerous trap, fueling further political disagreement while risking public trust in science. A major transformation is needed in how scientists and their organizations engage the public and policymakers. The new direction is not to become more political and confrontational on the national stage, but to seek opportunities for greater public interaction, dialogue, and partnerships in communities across the country.
I have reposted the full essay from Slate below.
CLIMATE SCIENTISTS GETTING A LITTLE TOO ANGRY FOR THEIR OWN GOOD
As Congress continues to struggle its way toward new energy legislation, climate scientists are getting a little hot. A series of major attacks from the global-warming skeptics—including last year'sClimategate affair and unfair accusations stemming from the subsequent discovery of errors in the latest IPCC report —have left those in the research community understandably angry. Having spent eight years calling attention to the politicization of climate science by the Bush administration, they now find themselves on the other end of the same allegations. Whatever raw emotions this reversal might produce were on display a couple of weeks ago in yet another series of leaked e-mails: This time, members of the prestigious National Academies complained to one another about the "neo-McCarthyism" of the climate skeptics and lamented that "science is getting creamed with no effective response." One researcher called for "a relentless rain of science and scientific dialog on the incredible, destructive demagoguery." Another participant urged an "aggressively partisan approach."
The latest batch of e-mails reflects a bunker mentality among climate scientists, forged during the Bush administration and reinforced by the recent attacks on their credibility. Despite the promise of an Obama presidency, many now see themselves losing a "war" against "anti-science" forces allied with energy companies and the Republican Party. Meanwhile, scientists have been urged by liberal strategists and commentators to "fight back"—by forming their own political action committees and openly supporting "pro-science" candidates, among other things.
But urgent calls to escalate the war against climate skeptics may lead scientists and their organizations into a dangerous trap, fueling further political disagreement while risking public trust in science. A major transformation is needed in how scientists and their organizations engage the public and policymakers. The new direction is not to become more political and confrontational on the national stage, but to seek opportunities for greater public interaction, dialogue, and partnerships in communities across the country.
The problems begin when scientists overestimate the influence of climate skeptics and their corporate backers. When legislation and international treaties fail, and polls show a decrease in public concern about the environment, the "climate deniers" take the blame. Yet the efforts of James Inhofe, Glenn Beck, et al. represent just a few of several factors shaping public doubt and policy inaction. More important, perhaps, are the poor state of the economy, competition for political attention from the heath care debate, and confusion over colder weather. We're also faced with a widespread distrust of government that makes explaining complex cap-and-trade proposals that much more difficult. And it doesn't help that long-standing rules in Congress allow individual members to block substantive legislation.
Given these factors, it's not surprising that communication researchers, including me, have their doubts about the relative impact of Climategate on public opinion. An analysis by Stanford University's Jon Krosnick estimates that between 2008 and the end of November 2009, belief in global warming dropped just five points, from 80 percent to 75 percent. Other surveys find a stronger downward shift (PDF) over the same time period, but teasing out the causal influence of last year's hacked e-mails remains a question that will be debated in academic journals for some time. As Krosnick points out, only a small minority of Americans was likely to have paid attention to news and discussion of the event, and even fewer would have changed their long-standing views based on a single event. Consider that a Pew survey from December found that just 17 percent of Americans reported reading or hearing "a lot" about the leaked e-mail scandal. In comparison, during the same month more than half read or heard a lot about Afghanistan and the health care debate.
If communication researchers have trouble establishing clear evidence of a significant impact for Climategate, what explains the apparent overreaction by scientists and their bunker mentality? Past research shows that individuals more heavily involved on an issue, such as climate scientists, often tend to view even objectively favorable media coverage as hostile to their goals. They also have a tendency to presume exaggerated effects for a message on the public and will take action based on this presumed influence. The call to arms that "science is getting creamed" and that there is a need for an "aggressively partisan approach" are examples of how these common miscalculations about the media have colored the outlook of climate scientists.
Scientists are also susceptible to the biases of their own political ideology, which surveys show leans heavily liberal. Ideology shapes how scientists evaluate policy options as well as their interpretations of who or what is to blame for policy failures. Given a liberal outlook and strong environmental values, it must be difficult for scientists to understand why so many Americans have reservations about complex policies that impose costs on consumers without offering clearly defined benefits. Compounding matters, scientists, like the rest of us, tend to gravitate toward like-minded sources in the media. Given their background, they focus on screeds from liberal commentators which reinforce a false sense of a "war" against the scientific community.
The scientists seem to believe they can prevail by explaining the basis of climate change in clearer terms, while asserting the partisan motives of "climate deniers." This has been the strategy since the early days of the Bush administration, yet for many members of the public, a decade of claims about the "war on science" are likely ignored as just more elite rancor, reflecting an endless cycle of technical disputes and tit-for-tat name calling. What are needed are strategies that transcend the ideological divide, rather than strengthen it. Most importantly, snarling, finger-in-the-eye responses to the skeptics risk alienating the more than one-third of Americans (PDF) who remain ambivalent about climate change.
To be sure, there is a need for better, clearer explanations of the science, but it's wrongheaded to imagine that researchers and their organizations could ever compete effectively, in the long term, in a political debate with climate skeptics and their allies at the Chamber of Commerce and Fox News. Instead of exaggerating the problem of an allegedly hostile American public, scientists need to wake up to the fact that they continue to enjoy almost unrivaled trust and communication capital. Consider that a recent Yale/George Mason University survey finds 74 percent of Americans trust scientists as a source of information about climate change. Though this figure is down slightly since 2008, scientists still outrank every other societal group or political figure on the trust index by a wide margin. The numbers hold even among groups that might seem most antagonistic to science: A recent analysis (conducted by me and several colleagues) found that 77 percent of evangelicals under 35 trust scientists as a source of information about global warming.
Climate skeptics hope to erode this trust by drawing scientists out into the open of political debate. Instead of going on the counterattack, scientists and their organizations should employ their communication capital by partnering with opinion leaders from other sectors of society and engaging with local communities through public meetings and social media. By creating a public dialogue on climate change in cities and towns across the country, they can make the issue more personally relevant without getting mired in ideological differences. In these contexts, scientists and their community partners can talk about climate change as more than just an environmental problem. They can frame the issue in terms of national security, religion, public health, or economics—with an emphasis on policies that would lead to societal benefits rather than sacrifice and hardship.
Here's the best part: These partnerships with opinion leaders, from clergy to CEOs, would do far more than educate the public; they would educate scientists, too. By getting out of the lab and away from their echo chamber of like-minded views about climate politics, researchers would learn how other people view climate change, and what should and can be done about it. In the end, scientists are better off as community-based diplomats than cable news and blogosphere culture warriors.
A man's skeleton, found facedown with his hands bound, was unearthed near an ancient ceremonial circle during a high speed rail excavation project.
- A skeleton representing a man who was tossed face down into a ditch nearly 2,500 years ago with his hands bound in front of his hips was dug up during an excavation outside of London.
- The discovery was made during a high speed rail project that has been a bonanza for archaeology, as the area is home to more than 60 ancient sites along the planned route.
- An ornate grave of a high status individual from the Roman period and an ancient ceremonial circle were also discovered during the excavations.
An ancient skeleton of a man dating back to the Iron Age was uncovered outside of London last month, and though archaeologists aren't certain what the cause of death was, clues point to a murder most foul.
A skeleton representing a man who was tossed face down into a ditch nearly 2,500 years ago with his hands bound in front of his hips was dug up during a high speed rail excavation.
The positioning of the remains have led archaeologists to suspect that the man may have been a victim of an ancient murder or execution. Though any bindings have since decomposed, his hands were positioned together and pinned under his pelvis. There was also no sign of a grave or coffin.
"He seems to have had his hands tied, and he was face-down in the bottom of the ditch," said archaeologist Rachel Wood, who led the excavation. "There are not many ways that you end up that way."
Currently, archaeologists are examining the skeleton to uncover more information about the circumstances of the man's death. Fragments of pottery found in the ditch may offer some clues as to exactly when the man died.
"If he was struck across the head with a heavy object, you could find a mark of that on the back of the skull," Wood said to Live Science. "If he was stabbed, you could find blade marks on the ribs. So we're hoping to find something like that, to tell us how he died."
Other discoveries at Wellwick Farm
The grim discovery was made at Wellwick Farm near Wendover. That is about 15 miles north-west of the outskirts of London, where a tunnel is going to be built as part of a HS2 high-speed rail project due to open between London and several northern cities sometime after 2028. The infrastructure project has been something of a bonanza for archaeology as the area is home to more than 60 ancient sites along the planned route that are now being excavated before construction begins.
The farm sits less than a mile away from the ancient highway Icknield Way that runs along the tops of the Chiltern Hills. The route (now mostly trails) has been used since prehistoric times. Evidence at Wellwick Farm indicates that from the Neolithic to the Medieval eras, humans have occupied the region for more than 4,000 years, making it a rich area for archaeological finds.
Wood and her colleagues found some evidence of an ancient village occupied from the late Bronze Age (more than 3,000 years ago) until the Roman Empire's invasion of southern England about 2,000 years ago. At the site were the remains of animal pens, pits for disposing food, and a roundhouse — a standard British dwelling during the Bronze Age constructed with a circular plan made of stone or wood topped with a conical thatched roof.
Ceremonial burial site
A high status burial in a lead-lined coffin dating back to Roman times.
Photo Credit: HS2
While these ancient people moved away from Wellwick Farm before the Romans invaded, a large portion of the area was still used for ritual burials for high-status members of society, Wood told Live Science. The ceremonial burial site included a circular ditch (about 60 feet across) at the center, and was a bit of a distance away from the ditch where the (suspected) murder victim was uncovered. Additionally, archaeologists found an ornately detailed grave near the sacred burial site that dates back to the Roman period, hundreds of years later when the original Bronze Age burial site would have been overgrown.
The newer grave from the Roman period encapsulated an adult skeleton contained in a lead-lined coffin. It's likely that the outer coffin had been made of wood that rotted away. Since it was clearly an ornate burial, the occupant of the grave was probably a person of high status who could afford such a lavish burial. However, according to Wood, no treasures or tokens had been discovered.
Sacred timber circle
An aerial view of the sacred circular monument.
Photo Credit: HS2
One of the most compelling archaeological discoveries at Wellwick Farm are the indications of a huge ceremonial circle once circumscribed by timber posts lying south of the Bronze Age burial site. Though the wooden posts have rotted away, signs of the post holes remain. It's thought to date from the Neolithic period to 5,000 years ago, according to Wood.
This circle would have had a diameter stretching 210 feet across and consisted of two rings of hundreds of posts. There would have been an entry gap to the south-west. Five posts in the very center of the circle aligned with that same gap, which, according to Wood, appeared to have been in the direction of the rising sun on the day of the midwinter solstice.
Similar Neolithic timber circles have been discovered around Great Britain, such as one near Stonehenge that is considered to date back to around the same time.
This spring, a U.S. and Chinese team announced that it had successfully grown, for the first time, embryos that included both human and monkey cells.
In the novel, technicians in charge of the hatcheries manipulate the nutrients they give the fetuses to make the newborns fit the desires of society. Two recent scientific developments suggest that Huxley's imagined world of functionally manufactured people is no longer far-fetched.
On March 17, 2021, an Israeli team announced that it had grown mouse embryos for 11 days – about half of the gestation period – in artificial wombs that were essentially bottles. Until this experiment, no one had grown a mammal embryo outside a womb this far into pregnancy. Then, on April 15, 2021, a U.S. and Chinese team announced that it had successfully grown, for the first time, embryos that included both human and monkey cells in plates to a stage where organs began to form.
As both a philosopher and a biologist I cannot help but ask how far researchers should take this work. While creating chimeras – the name for creatures that are a mix of organisms – might seem like the more ethically fraught of these two advances, ethicists think the medical benefits far outweigh the ethical risks. However, ectogenesis could have far-reaching impacts on individuals and society, and the prospect of babies grown in a lab has not been put under nearly the same scrutiny as chimeras.
Mouse embryos were grown in an artificial womb for 11 days, and organs had begun to develop.
Growing in an artificial womb
When in vitro fertilization first emerged in the late 1970s, the press called IVF embryos “test-tube babies," though they are nothing of the sort. These embryos are implanted into the uterus within a day or two after doctors fertilize an egg in a petri dish.
Before the Israeli experiment, researchers had not been able to grow mouse embryos outside the womb for more than four days – providing the embryos with enough oxygen had been too hard. The team spent seven years creating a system of slowly spinning glass bottles and controlled atmospheric pressure that simulates the placenta and provides oxygen.
This development is a major step toward ectogenesis, and scientists expect that it will be possible to extend mouse development further, possibly to full term outside the womb. This will likely require new techniques, but at this point it is a problem of scale – being able to accommodate a larger fetus. This appears to be a simpler challenge to overcome than figuring out something totally new like supporting organ formation.
The Israeli team plans to deploy its techniques on human embryos. Since mice and humans have similar developmental processes, it is likely that the team will succeed in growing human embryos in artificial wombs.
To do so, though, members of the team need permission from their ethics board.
CRISPR – a technology that can cut and paste genes – already allows scientists to manipulate an embryo's genes after fertilization. Once fetuses can be grown outside the womb, as in Huxley's world, researchers will also be able to modify their growing environments to further influence what physical and behavioral qualities these parentless babies exhibit. Science still has a way to go before fetus development and births outside of a uterus become a reality, but researchers are getting closer. The question now is how far humanity should go down this path.
Chimeras evoke images of mythological creatures of multiple species – like this 15th-century drawing of a griffin – but the medical reality is much more sober. (Martin Schongauer/WikimediaCommons)
Human–monkey hybrids might seem to be a much scarier prospect than babies born from artificial wombs. But in fact, the recent research is more a step toward an important medical development than an ethical minefield.
If scientists can grow human cells in monkeys or other animals, it should be possible to grow human organs too. This would solve the problem of organ shortages around the world for people needing transplants.
But keeping human cells alive in the embryos of other animals for any length of time has proved to be extremely difficult. In the human-monkey chimera experiment, a team of researchers implanted 25 human stem cells into embryos of crab-eating macaques – a type of monkey. The researchers then grew these embryos for 20 days in petri dishes.
After 15 days, the human stem cells had disappeared from most of the embryos. But at the end of the 20-day experiment, three embryos still contained human cells that had grown as part of the region of the embryo where they were embedded. For scientists, the challenge now is to figure out how to maintain human cells in chimeric embryos for longer.
Regulating these technologies
Some ethicists have begun to worry that researchers are rushing into a future of chimeras without adequate preparation. Their main concern is the ethical status of chimeras that contain human and nonhuman cells – especially if the human cells integrate into sensitive regions such as a monkey's brain. What rights would such creatures have?
However, there seems to be an emerging consensus that the potential medical benefits justify a step-by-step extension of this research. Many ethicists are urging public discussion of appropriate regulation to determine how close to viability these embryos should be grown. One proposed solution is to limit growth of these embryos to the first trimester of pregnancy. Given that researchers don't plan to grow these embryos beyond the stage when they can harvest rudimentary organs, I don't believe chimeras are ethically problematic compared with the true test–tube babies of Huxley's world.
Few ethicists have broached the problems posed by the ability to use ectogenesis to engineer human beings to fit societal desires. Researchers have yet to conduct experiments on human ectogenesis, and for now, scientists lack the techniques to bring the embryos to full term. However, without regulation, I believe researchers are likely to try these techniques on human embryos – just as the now-infamous He Jiankui used CRISPR to edit human babies without properly assessing safety and desirability. Technologically, it is a matter of time before mammal embryos can be brought to term outside the body.
While people may be uncomfortable with ectogenesis today, this discomfort could pass into familiarity as happened with IVF. But scientists and regulators would do well to reflect on the wisdom of permitting a process that could allow someone to engineer human beings without parents. As critics have warned in the context of CRISPR-based genetic enhancement, pressure to change future generations to meet societal desires will be unavoidable and dangerous, regardless of whether that pressure comes from an authoritative state or cultural expectations. In Huxley's imagination, hatcheries run by the state grew a large numbers of identical individuals as needed. That would be a very different world from today.
Sahotra Sarkar, Professor of Philosophy and Integrative Biology, The University of Texas at Austin College of Liberal Arts
Scientists should be cautious when expressing an opinion based on little more than speculation.
- In October 2017, a strange celestial object was detected, soon to be declared our first recognized interstellar visitor.
- The press exploded when a leading Harvard astronomer suggested the object to have been engineered by an alien civilization.
- This is an extraordinary conclusion that was based on a faulty line of scientific reasoning. Ruling out competing hypotheses doesn't make your hypothesis right.
Sometimes, when you are looking for something ordinary, you find the unexpected. This is definitely the case with the strange 'Oumuamua, which made international headlines as a potential interstellar visitor. Its true identity remained obscure for a while, as scientists proposed different explanations for its puzzling behavior. This is the usual scientific approach of testing hypotheses to make sense of a new discovery.
What captured the popular imagination was the claim that the object was no piece of rock or comet, but an alien artifact, designed by a superior intelligence.
Do you remember the black monolith tumbling through space in the classic Stanley Kubrick movie 2001: A Space Odyssey? The one that "inspired" our ape-like ancestors to develop technology and followed humanity and its development since then? What made this claim amazing is that it wasn't coming from the usual UFO enthusiasts but from a respected astrophysicist from Harvard University, Avi Loeb, and his collaborator Shmuel Bialy. Does their claim really hold water? Were we really visited by an alien artifact? How would we know?
A mystery at 200,000 miles per hour
Before we dive into the controversy, let's examine some history. 'Oumuamua was discovered accidentally by Canadian astronomer Robert Weryk while he was routinely reviewing images captured by the telescope Pan-STARRS1 (Panoramic Survey and Rapid Response System 1), situated atop the ten-thousand-foot Haleakala volcanic peak on the Hawaiian island of Maui. The telescope scans the skies in search of near-Earth objects, mostly asteroids and possibly comets that come close to Earth. The idea is to monitor the solar system to learn more about such objects and their orbits and, of course, to sound the alarm in case of a potential collision course with Earth. Contrary to the objects Weryk was used to seeing, mostly moving at about 40,000 miles per hour, this one was moving almost five times as fast — nearly 200,000 miles per hour, definitely an anomaly.
Intrigued, astronomers tracked the visitor while it was visible, concluding that it indeed must have come from outside our solar system, the first recognized interstellar visitor. Contrary to most known asteroids that move in elliptical orbits around the sun, 'Oumuamua had a bizarre path, mostly straight. Also, its brightness varied by a factor of ten as it tumbled across space, a very unusual property that could be caused either by an elongated cigar shape or by it being flat, like a CD, one side with a different reflectivity than the other. The object, 1I/2017 U1, became popularly known as 'Oumuamua, from the Hawaiian for "scout."
In their paper, Loeb and Bialy argue that the only way the object could be accelerated to the speeds observed was if it were extremely thin and very large, like a sail. They estimated that its thickness had to be between 0.3 to 0.9 millimeters, which is extremely thin. After confirming that such an object is robust enough to withstand the hardships of interstellar travel (e.g., collision with gas particles and dust grains, tensile stresses, rotation, and tidal forces), Loeb and Bialy conclude that it couldn't possibly be a solar system object like an asteroid or comet. Being thus of interstellar origin, the question is whether it is a natural or artificial object. This is where the paper ventures into interesting but far-fetched speculation.
I'm not saying it was aliens, but it was aliens
First, the authors consider that it might be garbage "floating in interstellar space as debris from advanced technological equipment," ejected from its own stellar system due to its non-functionality; essentially, alien space junk. Then, they suggest that a "more exotic scenario is that 'Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization," [italicized as in the original] concluding that a "survey for lightsails as technosignatures in the solar system is warranted, irrespective of whether 'Oumuamua is one of them."
You can shoot down as many hypotheses as you want to vindicate yours, but this doesn't prove yours is the right one.
I have known Avi Loeb for decades and consider him a serious and extremely talented astrophysicist. His 2018 paper includes a suggestive interpretation of strange data that obviously sparks the popular imagination. Theoretical physicists routinely suggest the existence of traversable wormholes, multiverses, and parallel quantum universes. Not surprisingly, Loeb was highly in demand by the press to fill in the details of his idea. A book followed, Extraterrestrial: The First Sign of Intelligent Life Beyond Earth, and its description tells all: "There was only one conceivable explanation: the object was a piece of advanced technology created by a distant alien civilization."
This is where most of the scientific establishment began to cringe. One thing is to discuss the properties of a strange natural phenomenon and rule out more prosaic hypotheses while suggesting a daring one. Another is to declare to the public that the only conceivable explanation is one that is also speculative. An outsider will conclude that a reliable scientist has confirmed not only the existence of extraterrestrial life but of intelligent and technologically sophisticated extraterrestrial life with an interest in our solar system. I wonder if Loeb considered the impact of his words and how they reflect on the scientific community as a whole.
This is why aliens won't talk to us
Earlier this year, in a live public lecture hosted by the Catholic University of Chile, Avi Loeb locked horns with Jill Tarter, the scientist that is perhaps most identifiable as someone who spent her career looking for signs of extraterrestrial intelligence. (Coincidentally, I was the speaker that followed Loeb the next week in the same seminar series and was cautioned — along with the other panelists — to behave myself to avoid another showdown. I smiled, knowing that my topic was pretty tame in comparison. I mean, how can the limits of human knowledge compare with alien surveillance?)
The Loeb-Tarter exchange was awful and, it being a public debate, was picked up by the press. Academics can be rough like anyone else. But the issue goes deeper.
What scientists say matters. When should a scientist make public declarations about a cutting-edge topic with absolute certainty? I'd say never. There is no clear-cut certainty in cutting-edge science. There are hypotheses that should be tested more until there is community consensus. Even then, consensus is not guaranteed proof. The history of science is full of examples where leading scientists were convinced of something, only to be proven wrong later.
The epistemological mistake Loeb committed was to make an assertion that publicly amounted to certainty by using a process of elimination of other competing hypotheses. You can shoot down as many hypotheses as you want to vindicate yours, but this doesn't prove yours is the right one. It only means that the other hypotheses are wrong. I do, however, agree with Loeb when he says that 'Oumuamua should be the trigger for an increase in funding for the search for technosignatures, a way of detecting intelligent extraterrestrial life.