Archive for Science
Fort Conger, Ellesmere Island, November 1881
Only after Adolphus Greely had directed his men to build their long bunk house at Fort Conger, when the long night of winter had descended on Lady Franklin Bay, did he direct the party to begin preparations for using the Peirce No. 1. Greely was a man who, much like Israel, was comfortable with data collection and precision instruments. He had overseen the creation of a vast telegraph network in the U.S. Army Signal Corps, becoming the Army’s top meteorologist. Perhaps this was a reason for the close bond that grew up between the two men. Greely identified a site on the north side of the house, a space sheltered under a canvas lean-to, where the pendulum could be placed. A party began digging the holes and pouring the Portland cement piers that would anchor the instrument. Digging frozen ground in the dark at -30°F wasn’t pleasant work and even Greely, not inclined to complain about conditions, described the process as “tedious and trying.” The men built an ice house around the pendulum frame to protect it from the elements and to stabilize its temperature. They placed a glass window with the wall in order for Israel to record measurements without entering the ice house. Only then did they remove the pendulum from its tin shroud and long wooden case. There, they hung it to swing in its dark, frigid chamber.
The delay in setting up the pendulum was deliberate. Peirce had recognized that the Arctic winter offered special advantages for pendulum use. The frozen ground firmed up the support of the concrete piers, reducing the flexure of the frame that might change the duration of the pendulum’s swing. In winter, the frigid Arctic air was very dry, reducing humidity that would deposit moisture on the pendulum, skewing its weight. Finally, the depth of winter would also bring greater consistency of temperature, important to limit any expansion or contraction of the metal itself.
Yet for Israel, the difficult work was only beginning. The relative simplicity of the Peirce No. 1 belied the complexity of Peirce’s instructions. The Superintendent had given Israel a daunting list of requirements for the pendulum’s proper use. Israel needed to swing the pendulum within a very specific range of motion: not larger than 25/1000ths and not smaller than 5/1000ths of the arc radius. The pendulum had to be swung for ninety minutes, reversed, and swung again for thirty. This series needed to be repeated multiple times, so that the total time of pendulum measurements reached six hours a day.
In addition to marking each swing over time, Israel had to record temperatures as well. Since the thermometer couldn’t touch the pendulum, Peirce directed Israel to set up thermometers near the top and the bottom of the instrument, making sure that each did not vary perceptibly from one another or over the time of the swing. Finally, Israel had to measure the flexure of the frame itself, which Peirce instructed, could not vary more than 1/200th of a millimeter. Although the glass window allowed Israel to measure each swing from the comfortable distance of the house, he still had to swing the pendulum, measure temperature, and look for microscopic flexures of the frame. In the end, Greely records that “for sixteen days in January 1882 he diligently swung Peirce Pendulum No. 1 in a specially constructed ice shelter.” After the sixteen-day series was complete, the pendulum was placed within its slender wood box and sealed once again in tin, to wait for its transport home with the party in the summer of 1882. The entire sequence of the pendulum experiment, from Peirce’s training to Israel’s execution had been meticulously planned and executed. For Greely and his party it represented a triumph of science over sensationalism, one that would contrast sharply and tragically with the catastrophe that followed.
Cape Sabine, Ellesmere Island, 1884
The expedition that came to relieve the Greely Party at Fort Conger in 1882 was turned back by ice. Greely and his men, despondent at the lack of relief, overwintered for a second year and waited for the arrival of a second relief expedition in 1883. Yet this expedition, too, failed to reach Fort Conger, crushed by pack ice in the southern reaches of Smith Sound. As it became clear that the second expedition was not going to arrive in 1883, Greely made preparations to evacuate Fort Conger and travel south in small boats.
The forced retreat created a dilemma for Greely and his men. It was crucial to return the pendulum to Washington so that it could be inspected and swung again by Peirce, confirming the measurements taken at Fort Conger. Yet the pendulum in its tin case and wooden crate added over forty kilograms of dead weight to an increasingly desperate escape effort.
Greely hoped to find stores near Cape Sabine left by the relief expeditions. Yet arriving at the southern reaches of Smith Sound, the party found few provisions. With little hope of finding more food, the party would now have to carry the pendulum as they dragged their boats over the pack ice. Greely took the issue to his men:
I informed the men that I was unwilling, much as I wanted to save that instrument, to lessen their chances of life by hauling it longer, unless all concurred, and that it would be dropped whenever they wished. Not only was there no objection to keeping it, but several of the party were outspoken in considering it unmanly to abandon it. Such a spirit is certainly most credible.’
The men continued to carry the pendulum, stripping off the tin shroud to reduce weight. Eventually, they cached the Peirce No. 1 on Stalknecht Island, just off the shore of Cape Sabine. While it had functioned as a precision instrument in Washington and Fort Conger, the Peirce No. 1 now became a rescue beacon for relief ships entering Smith Sound, its long box anchored as a tower to the rock cairn to make it more visible, a note tucked within the rocks giving the party’s location on Cape Sabine.
During the winter and spring of 1884, the members of the Greely party slowly succumbed to starvation. On 27 May 1884, Israel began speaking quietly of home, his mother’s cooking. He became delirious and died. Greely, who shared a sleeping bag with Israel during their final desperate months, wrote that he “learned to love him like a brother.” When Greely conducted Israel’s burial, he edited the Christian service to make it consistent with the astronomer’s Jewish faith. Twenty four days after Israel died, a rescue party under the command of Winfield Schley arrived at Cape Sabine where they found Greely and six men close to death, the last survivors of the twenty-five men crew. Schley had expected to find Greely further north at Fort Conger, but his men saw the cairn on Stalknecht Island and went to investigate. There, they found the tall pendulum in its box, still projecting upwards from the rocks.
Washington D C., August, 1884
Thousands of well-wishers turned out in Portsmouth New Hampshire to welcome Greely and his men home. The day was filled with speeches and a parade of over two thousand. Speaking of the value of the expedition, Senator Eugene Hale of Maine told the crowds, “Nothing dims its record. There was no insubordination, no blundering, no losing of the head.” Hale’s remarks were premature. As he spoke, evidence was emerging that some members of the party had resorted to cannibalism in their final months at Cape Sabine. The press also discovered that the Greely party was riven by conflicts, especially during the long retreat from Fort Conger when Greely’s officers had almost relieved Greely of his command. As these discoveries swirled in the pages of the popular press, Greely defended himself, the bravery of the party, and the expedition’s commitment to science.
Key to this defense was the party’s unanimous decision to carry the Peirce No. 1 out of the Arctic despite its weight. Greely chronicled this event in his final report, and it also appeared in the Coast Survey report as well as popular press accounts. As a result, the pendulum gained symbolic importance. It was at this moment, ironically, that Peirce began to question the instrument’s scientific value. He had measured the pendulum at the Coast Survey Building in late 1884 and observed that its length and mass had changed significantly since 1881. As a benchmark of Israel’s Arctic measurements, then, the pendulum seemed useless. Greely was furious, defending himself and Israel in a letter that he attached to Peirce’s report. Yet the long brass bar yielded results of a different kind. While it may have failed to measure the contours of the earth, in the eyes of many nineteenth-century Americans, it offered something more valuable in return: a measure of scientific spirit and manly character, one that protected Greely and the reputation of the expedition party in the decades to come.
[This essay was published by the journal Endeavour in December 2012: 36(4):187-90]
 Greely quoted from Three Years of Arctic Service: An Account of the Lady Franklin Bay Expedition, 1881-1884 (New York, 1894) 1:119.
 C.S. Peirce, “General Instructions for Observing Oscillating Pendulums,” (1881) from The Peirce Edition Project, http://www.iupui.edu/~peirce/writings/v6/W6ann/W6ann30.htm
 Introduction, Writings of Charles S. Peirce: 1886-1890 (Bloomington: Indiana University Press, 2000), 6: xxx.
 Guttridge, Ghosts, 151-199.
 Greely, Arctic Service, “Arctic Journal” dated 17 Sept 1883. 1:509-10
 Eugene Hale quoted in William McGinley, Reception of Lieut. A. W. Greely, U. S. A., and His Comrades, and of the Arctic Relief Expedition, at Portsmouth, N. H., on August 1 and 4, 1884 (Washington: Government Printing Office, 1884), 35.
 Rebecca Herzig writes about the value of hardship in the Greely Expedition in Suffering for Science (Rutgers University Press, 2005), 64-84. Also see “The Magnetic and Tidal Work of the Greely Arctic Expedition,” Science 9 (4 March 1887): 215-217; Editorial, Science 4 (1 August 1884): 94; Daniel Gilman, “Reception of the Greely Arctic Explorer, Lieutenant Greely, U. S. A.,” Johns Hopkins University Circulars 4 (March 1885): 54.
Washington D.C., July 1881
Sargent Edward Israel arrived in Washington and made his way up Capitol Hill to the Coast Survey Building. He had an appointment with C.S. Peirce, superintendent of the Coast Survey, who would instruct Israel in the use of scientific instruments needed for the Greely Expedition, scheduled to depart for the Arctic in a few weeks. At twenty-two, Israel was the youngest member of the expedition. He had just finished his degree in astronomy at the University of Michigan where he had impressed faculty with his command of theoretical astronomy. He was comfortable with scientific equipment and well-prepared to do complicated calculations and reductions. Yet the biggest challenge that would face him on this expedition was in the gathering of data. His meeting with Peirce was not merely a lesson in how to use instruments, but how to use them in extreme conditions.
When the Greely Expedition built its station on Ellesmere Island at 81°N latitude, it would be the northernmost outpost in the world, and one of the most difficult places on earth to do science. One of twelve stations to be established during the International Polar Year (IPY) of 1881-1882, the American outpost would record – along with all of the other stations – a variety of terrestrial phenomena including tides, weather, temperature, wind speed, and barometric pressure. The IPY was the brainchild of Austrian explorer, Karl Weyprecht, an attempt to redirect the energies of polar explorers away from flag planting and records of “Farthest North” towards something more substantial: a sustained and systematic program of Arctic research.
When Israel arrived at the Coast Survey Building, he was met by Peirce. The two men descended into the basement and entered Room 6. There, anchored by concrete piers, suspended from a large trapezoidal frame hung a long brass bar, the Peirce Pendulum No. 1. Few people would have identified the object as a pendulum. It did not have a round weight or a thin arm. It was not an object one would find oscillating in the case of a grandfather clock. The Peirce No. 1 was unremarkable except for small projections, “knife edges,” that jutted out of the sides of bar near its top and bottom and allowed the pendulum to hang freely in its wooden frame.
Peirce set the pendulum in motion, swinging it a few centimeters off center. The heavy bar, rocking back and forth on the slender pivot of its knife edges, swept out small, regular arcs. Israel did not record his impressions that day. He would not survive the expedition to write about it later. Perhaps his college experience with the instruments of astronomy, the telescopes that offered him spectacular views of planets and nebulae, made him jaded to the operations of the Peirce No. 1. Yet even someone less experienced with scientific instruments than Israel, some imaginary passer-by who found himself in Room 6 that day, would have struggled to find either drama or meaning in the Peirce No. 1’s slow monotonous motions. It appeared almost too simple to be useful.
Yet it was the monotony of this pendulum that gave it its power. Allowed to swing freely, a pendulum will repeat its journey back and forth in the same period of time, even as the height of its swing diminishes. It did not escape the attention of Galileo or other Renaissance scholars that the regularity of this motion offered a valuable way of measuring time itself. By the 1650s, the Dutch mathematician Christiaan Huygens understood the movement of a pendulum well enough to describe it mathematically:
T = π√(l/g)
where the time (T) of the pendulum’s swing varies directly with its length (l) and indirectly with the force of gravity (g). Assuming that gravity remains constant, the most important variable determining the pendulum’s swing is the length of its arm. By lengthening or shortening this arm, the pendulum can be made to sweep out an arc of desired duration. After Huygens patented his first pendulum clock in 1657, clockmakers developed a “seconds pendulum” that offered a spectacular improvement in accuracy from earlier clocks, reducing error from fifteen minutes to fifteen seconds a day.
By the 1700s, the pendulum had also found more esoteric uses. Since clockmakers had succeeded in showing that a swinging bob could be used as a measure of time, it stood to reason that that swinging bob, marked by increments of time, could be used as a measure of gravity. Gravity appeared to be remarkably stable over time, but was it also stable over distance? On a perfectly spherical earth, this should be the case since the distance between the surface and the earth’s center of mass would never vary. A distortion of the planetary sphere, however, would produce variations in gravity from place to place, ones that might be detectible by the swinging of a pendulum. For this reason, in the 1730s, the French geodetic expeditions of Pierre-Louis Moreau de Maupertuis and Charles Marie de La Condamine carried gravity pendulums with them to the polar and equatorial regions respectively, attempting to resolve a dispute between French geographer Jean-Dominique Cassini, who believed the earth was slightly egg-shaped, and Isaac Newton who was convinced it was squashed like a jelly-donut. The expeditions proved Newton right, but did not give enough data to describe to the shape of the geoid with precision.
This was the objective of Israel and the Peirce No. 1: to determine the precise shape of the earth from the swinging of the pendulum. In so doing, it fit comfortably within the pendulum’s expanding role as an instrument of research, marking a procession of important instruments from Condamine’s pendulum in the 1700s to Foucault’s pendulum in the 1800s. Gradually the pendulum had evolved from a symbol of timekeeping to a symbol of science. As such, it conformed nicely to the broader objectives of the IPY: to reinvent Arctic exploration as something serious, scientific, and collaborative.
As the simple brass bar swung on its knife edges in Room 6, Peirce recorded the duration of its swings. The meeting had provided Israel with a tutorial in operating the pendulum, but it had offered Peirce something equally important: a series of measurements that he could compare with those made by Israel in the Arctic. As they concluded their meeting, Israel departed. In Room 6, the Peirce No. 1 was carefully packed in a long wooden case and sealed with tin. In the days that followed, it was shipped north with other expedition equipment to St. John’s Harbor, Newfoundland where it was stowed below deck on Greely’s expedition ship, Proteus. On 7 July, the ship set sail with the expedition party for Lady Franklin Bay, an inlet on the northeastern shore of Ellesmere Island, the northernmost island in the Arctic Archipelago.
[This essay was published by the journal Endeavour in December 2012: 36(4):187-90]
 I want to thank Dr. Geoffrey Clark for his support in this project. I wrote about Greely’s pendulum briefly in The Coldest Crucible: Arctic Exploration and American Culture (Chicago: University of Chicago Press, 2006), but he convinced me that this instrument was part of a larger story. He has also generously allowed me to use his photos of the Peirce pendulum for this essay.
 William Barr, The Expeditions of the First International Polar Year, 1882-83 (Calgary: Arctic Institute of North America, University of Calgary, 1985). The goals of the IPY did not prevent the Greely Expedition from also pursuing a record of “Farthest North.” Weyprecht’s ideals co-existed with nationalistic and adventurist interests in the Polar Regions.
 C.S. Peirce, “Pendulum Observations” in Report on the Proceedings of the United States Expedition to Lady Franklin Bay, Grinnell Land (Washington, DC.: Government Printing Office, 1888), 2: 701-714.
 The changing amplitude of a pendulum swing does have a small effect on its period, something that Huygens pointed out in his work Horologium Oscillatorium sive de motu pendulorum (1673); Matthew Bennett et al., “Huygens’ Clocks,” Proceedings of the Royal Society of London, (2002) A 458, 563–579; Victor Fritz Lenzen and Robert P. Multhauf, “Development of Gravity Pendulums in the 19th Century,” Contributions from the Museum of History and Technology, Papers 34-44, On Science and Technology (Washington D.C.: Smithsonian Institution, 1966), 305-6, 324-330.
 This assumes the earth’s mass is distributed uniformly.
 Mary Terrall, The Man Who Flattened the Earth: Maupertuis and the Sciences in the Enlightenment (Chicago: University of Chicago Press, 2002).
 Leonard F. Guttridge, Ghosts of Cape Sabine: The Harrowing True Story of the Greely Expedition (New York: Berkeley Books, 2000), 49.
On Monday 31 January, PBS will air a documentary called “The Greely Expedition” on American Experience. I served as an advisor on the project. Organized in conjunction with the first International Polar Year, the Greely Expedition was supposed to represent a new kind of Arctic exploration, one focused on international, collaborative science rather than pell mell dashes to the North Pole. In the end, however, the expedition signaled the end of serious collaboration between Arctic explorers and scientists for decades. Here’s an excerpt from my Greely chapter in The Coldest Crucible: Arctic Exploration and American Culture.
In June 1884, Commander Winfield Scott Schley cruised the waters of Smith Sound searching for Adolphus Greely and his missing party of American explorers. Greely had been in the Arctic for three years, establishing a scientific station at Lady Franklin Bay as a part of the International Polar Year. Two attempts to relieve Greely, in 1882 and 1883, had failed and Schley’s expedition represented the last reasonable chance of finding the Greely party alive. When one of Schley’s men discovered a note from Greely giving his location at Cape Sabine, Schley sent John Colwell and a small party to find him. Arriving at the site, Colwell found Greely along with six other emaciated men, survivors of the original party of twenty-five. In his narrative of the rescue, Schley described the scene:
Colwell crawled in [the tent] and took him by the hand, saying to him, “Greely, is this you?” “Yes,” said Greely in a faint, broken voice, hesitating and shuffling with his words, “Yes – seven of us left – here we are – dying – like men. Did what I came to do – beat the best record.” Then he fell back exhausted.[i]
Schley was not on the beach himself and relied upon the reports of his men to piece together events. Yet his narrative, published almost a year after the return of the survivors, soon gained authority as a true-life account of the dramatic rescue. The New York Herald excerpted it liberally in its reports about the expedition. Later reminiscences, such as Munsey’s Magazine’s 1895 account of the expedition, presented the scene exactly as it had appeared in Schley’s narrative. Even David L. Brainard, one of the seven survivors of the Greely party, used Schley’s dialogue word for word in his 1929 account of the expedition, as well as in a more candid narrative that he published in 1940. Yet others on the beach recalled the meeting differently. One member of the rescue party reported that Greely first asked him “if we were Englishmen.” Another remembers Greely chastising them. “If we’ve got to starve . . . we can starve without your help . . . we were dying peacefully until you came.” Maurice Connell, one of Greely’s men, was unconscious at the time of the rescue. Yet for him the published account of Greely’s words did not ring true. In the margins of Schley’s book he wrote: “‘Give us something to eat!’ more probably.”[ii]
Whether or not Greely, delirious and close to death, uttered his pithy remarks is unclear. What is clear is that the scene Schley described offered a far more respectable image of Greely and his party than the ones that circulated for months in the popular press upon Greely’s return. Immediately after the return of Schley’s rescue expedition, the New York Times, the Chicago Tribune, and other papers deluged readers with lurid stories about the Greely party’s demise on Cape Sabine. They uncovered Greely’s execution of a man for stealing food. They reported on rumors of cannibalism among the party and discussed charges by Greely’s men that he was inept as a commander. Schley’s account did not erase the impact of these revelations, but arriving in the wake of the reports, offered a means of capping the well of controversy, as its extensive use later suggests.
The controversy that engulfed Greely after his return eclipsed his expedition’s scientific work. Billed as the most ambitious research mission ever sent into the Arctic, Greely’s expedition marked instead the end of serious collaboration between scientists and Arctic explorers in the nineteenth century. In the decades to follow, explorers occasionally promoted their voyages as research expeditions, but their words had little bearing upon their expeditions or campaigns. New patrons of Arctic exploration freed explorers from having to appeal to the scientific community to raise funds or lobby Congress. From the point of view of scientists, Greely and other explorers had abandoned their research missions in order to give allegiance to new masters, private patrons and press moguls who cared little about Arctic science. Schley’s account of the rescue only underscored the point. Greely declared to Colwell that he “did what I came to do – beat the best record,” but he had not entered the Arctic to do anything of the kind. In fact, organizers of the Greely expedition had hoped quite the opposite: that Greely and his men would turn their backs on dangerous and irrelevant dashes to the North Pole, focus on methodical research, and embrace the collaborative spirit of the International Polar Year. To his credit, Greely carried out much of this research at first, but he eventually turned his attention to the geographical dashes so disapproved of by international organizers. Greely’s words on Cape Sabine, true or apocryphal, only confirmed suspicions that science had also been a casualty of his expedition.
The claim that the Greely expedition marked the end of explorers’ serious collaboration with the scientists stands at odds with most historical accounts. Because Greely brought back the most comprehensive and systematic set of observations ever produced by Americans in the Arctic, historians have often held it up as a sign that U.S. scientific exploration had come of age. For historian of science A. Hunter Dupree, the Greely expedition “laid the groundwork for a really scientific interest in Arctic and Antarctic problems.”The wealth of data collected by Greely and his men has led William Barr to revisit the events of the expedition in hopes of illustrating its scientific importance. Expedition historian A. L. Todd agrees, calling Greely’s official narrative “one of the most important source books of arctic data available to the world of science.” Focused on quality of expedition data, however, these works leave unexamined the reactions of scientists, press, and public back home. Fixing our attention here, we see a different picture emerge: a diminished role for science in Arctic exploration, a waning collaboration between explorers and researchers, and a decline of scientific rhetoric in expeditionary campaigns.[iii]
The reasons for this change extend beyond the expedition. Greely and his rescuers may have sown the seeds of controversy by their actions in the Arctic, but these actions only bloomed into scandal because of important cultural and institutional changes back home. That science fell victim to scandal after Greely’s return reflected a new trend in newspaper journalism that put a premium on critical, often sensational, reporting. This was a far cry from the 1850s, when reporters generally avoided controversy in their attempts to portray Arctic explorers as American heroes. By the 1880s, however, writers proved far more willing, even eager, to expose expedition scandals even when it came at explorers’ expense.
The estrangement of explorers and scientists also grew out of changes in the patronage of Arctic exploration. Whereas Henry Grinnell had encouraged his explorers to campaign as a way of raising funds and creating broad coalitions among scientists and the public, the deep pockets of new patrons such as the New York Herald made such actions unnecessary. Flush with funds and backed by promotional power of their patrons, explorers had little need to campaign. Greely took his orders from the Army Signal Corps, not the popular press, but many of the effects were the same. With his expedition already organized and underwritten by the Corps, Greely felt no incentive to write, lecture, or rub elbows with scientists or other groups in the months before his departure. As a result, Greely established few of the personal bonds with scientists and others that had so benefitted Elisha Kane and helped to insulate him from his critics…
[i]. Two of the twenty-five members of the expedition were native Greenlanders, Jens Edward and Thorlip Frederick Christiansen. Quotation is from W. S. Schley, The Rescue of Greely (New York: Charles Scribner’s Sons, 1886), 222.
[ii]. “The Rescue of Greely,” New York Herald,” 26 March 1885; Frank Lewis Ford, “The Heroes of the Icy North,” Munsey’s Magazine 14 (1895): 296; David L. Brainard, The Outpost of the Lost: An Arctic Adventure (Indianapolis: Bobbs-Merrill Company, 1929), 312; Brainard, Six Came Back: The Arctic Adventures of David L. Brainard (Indianapolis: Bobbs-Merrill Company, 1940), 301; “if we were Englishmen . . .” comes from Charles Harlow, “Greely at Cape Sabine,” Century Magazine (undated) in Adolphus Washington Greely Papers, Manuscript Division, Library of Congress, Washington, D.C.. “If we’ve got to starve . . .” is from Frank B. Copley, “The Will to Live,” American Magazine, February (1911): 502-3. “‘Give us something to eat!’” comes from newspaper clipping “Sergeant Connell”, 31 May 1885, Box 74, Greely Papers, Library of Congress.
[iii]. A. Hunter Dupree, Science in the Federal Government (Cambridge, MA: Belknap Press of Harvard University Press, 1957), 193; William Barr, The Expeditions of the First International Polar Year, 1882-83 (Calgary: University of Calgary, 1985); A. L. Todd, Abandoned (New York: McGraw-Hill Book Company, 1961).
I’ve been slow to update the past two weeks, due to the collision of teaching and writing projects. One of these projects, an essay for an edited collection, looks at the relationship of science and exploration in historical context. I’m including the first paragraphs of the intro below, just so you don’t think I’m playing foosball.
Westerners began to think differently about exploration in the nineteenth century. Whereas they once talked about it as a fascination, a symbol of progress, they began referring to it a “fever”: something rampant, contagious, and immune to reason. During this period, explorers poured out of Europe and the United States for regions remote and dangerous. Some raced to the limits of latitude, to stand first at the polar axes.
Others set off for the equatorial regions seeking lost tribes, lost cities, and lost explorers. Survey expeditions mapped the American West, inventoried the ocean depths, and facilitated the “Scramble for Africa.” States sponsored some of these efforts. Museums and universities sponsored others. Meanwhile private adventurers set off to write, photograph, and hunt their way through the world’s remaining terrae incognitae.
Taken together these activities produced oceans of text: articles, technical papers, and personal narratives. One writer for Nature, buried by stacks of expedition literature waiting to be reviewed, wondered what was driving the process. Did exploration fever grow out of a deeper love of science, a “craving for knowledge by stronger stimulants than can be obtained by books” ? Or was it —as the metaphor of fever implied— beyond human control, an affliction activated by some instinctive desire, “a remote ancestral habit which still clings to us.” If it was the latter then science would seem to be artifice, a veneer applied to expeditionary endeavors in order to mask true motives, deeper and atavistic urges that lured explorers up mountains and into malarial jungles.
 Robinson, Michael, The Coldest Crucible: Arctic Exploration and American Culture (Chicago: University of Chicago Press, 2006), 159-164; Robinson, “Maybe I Was Wrong” http://timetoeatthedogs.com/2009/01/29/maybe-i-was-wrong/
 “Two Amateur Explorers,” Nature 13: 264 (3 Feb 1876)
Here’s a teaser from an article I’m writing on Mars. It should be coming out soon. When I sell the rights to Sony Pictures, I’m going to ask that Russell Crowe play Mars. Is there any other logical choice?
Two Visions of Mars
Before he became the Roman god of war, Mars lived a quieter life as the protector of farms, crops, and animals. He was beloved by Romans as the father of Romulus; this made him the celestial father of the Roman people. Mars began to change as the Roman Empire changed. While farmers continued to look to him for protection, so did the imperial legions which left the Italian peninsula on expeditions of conquest.
In the first century BCE, therefore, Mars represented two things at once. He was the giver of life, the guardian of agriculture. He was also the blood-stained warrior, the defender of soldiers marching at the frontiers of the known world. While Romans may have been united in their love of Mars, they looked to him for different reasons.
Despite the change from god to planet, Mars continues to mean different things for different people. On one hand, it is an archive of the past, a planetary laboratory where scientists seek answers about the history of the solar system and the origins of life. On the other, it is the landscape of the future, the next human frontier, the first real step out of our planetary cradle.
In principle, these different visions of Mars – as science laboratory and human frontier – are complementary. On the science side, mission planners have long defended robotic expeditions for their value in paving the way for human exploration. Mariner, Viking, and Pathfinder all found justification as the trailblazers of human missions. Most recently, the Jet Propulsion Laboratory defended its uber-Rover, the Mars Scientific Laboratory, as a mission that will “prove techniques that will contribute to human landing systems”
Advocates of human spaceflight also defend the compatibility of human exploration and science, often on the grounds that humans are more effective in doing science than remotely-operated probes. As Mars Society president Robert Zubrin declares, Martian science “is a job for humans” [Launius & McCurdy, Robots in Space, 21].
In practice, however, the divide over Mars runs deep. Many space scientists express growing frustration with human space flight, which they view as an expensive distraction from scientific exploration. Lower costs, improvements in computer design and miniaturization, and the proven durability of Martian probes have encouraged their faith in robotic science and made arguments for sending astronauts to Mars less compelling.
By contrast, many supporters of human missions to Mars believe that the focus on science and robotic exploration has become too narrow, ignoring the deeper meanings of exploration, its capacity to inspire people today, and shape the societies of tomorrow. For those looking to place boots on Mars, NASA seems to be drifting in a Sargasso Sea of underfunded programs and policy revisions, never able to chart its course for the New World….