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Why Some Civil War Soldiers Glowed in the Dark

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By the spring of 1862, a year into the American Civil War, Major General Ulysses S. Grant had pushed deep into Confederate territory along the Tennessee River. In early April, he was camped at Pittsburg Landing, near Shiloh, Tennessee, waiting for Maj. Gen. Don Carlos Buell’s army to meet up with him.

On the morning of April 6, Confederate troops based out of nearby Corinth, Mississippi, launched a surprise offensive against Grant’s troops, hoping to defeat them before the second army arrived. Grant’s men, augmented by the first arrivals from the Ohio, managed to hold some ground, though, and establish a battle line anchored with artillery. Fighting continued until after dark, and by the next morning, the full force of the Ohio had arrived and the Union outnumbered the Confederates by more than 10,000.

The Union troops began forcing the Confederates back, and while a counterattack stopped their advance it did not break their line. Eventually, the Southern commanders realized they could not win and fell back to Corinth until another offensive in August (for a more detailed explanation of the battle, see this animated history).

All told, the fighting at the Battle of Shiloh left more than 16,000 soldiers wounded and more 3,000 dead, and neither federal or Confederate medics were prepared for the carnage.

The bullet and bayonet wounds were bad enough on their own, but soldiers of the era were also prone to infections. Wounds contaminated by shrapnel or dirt became warm, moist refuges for bacteria, which could feast on a buffet of damaged tissue. After months marching and eating field rations on the battlefront, many soldiers’ immune systems were weakened and couldn’t fight off infection on their own. Even the army doctors couldn’t do much; microorganisms weren’t well understood and the germ theory of disease and antibiotics were still a few years away. Many soldiers died from infections that modern medicine would be able to nip in the bud.

A Bright Spot

Some of the Shiloh soldiers sat in the mud for two rainy days and nights waiting for the medics to get around to them. As dusk fell the first night, some of them noticed something very strange: their wounds were glowing, casting a faint light into the darkness of the battlefield. Even stranger, when the troops were eventually moved to field hospitals, those whose wounds glowed had a better survival rate and had their wounds heal more quickly and cleanly than their unilluminated brothers-in-arms. The seemingly protective effect of the mysterious light earned it the nickname “Angel’s Glow.”

In 2001, almost one hundred and forty years after the battle, seventeen-year-old Bill Martin was visiting the Shiloh battlefield with his family. When he heard about the glowing wounds, he asked his mom - a microbiologist at the USDA Agricultural Research Service who had studied luminescent bacteria that lived in soil - about it.

“So you know, he comes home and, 'Mom, you're working with a glowing bacteria. Could that have caused the glowing wounds?’” Martin told Science Netlinks. “And so, being a scientist, of course I said, ‘Well, you can do an experiment to find out.’”

And that’s just what Bill did.

He and his friend, Jon Curtis, did some research on both the bacteria and the conditions during the Battle of Shiloh. They learned that Photorhabdus luminescens, the bacteria that Bill’s mom studied and the one he thought might have something to do with the glowing wounds, live in the guts of parasitic worms called nematodes, and the two share a strange lifecycle. Nematodes hunt down insect larvae in the soil or on plant surfaces, burrow into their bodies, and take up residence in their blood vessels. There, they puke up the P. luminescens bacteria living inside them. Upon their release, the bacteria, which are bioluminescent and glow a soft blue, begin producing a number of chemicals that kill the insect host and suppress and kill all the other microorganisms already inside it. This leaves P. luminescens and their nematode partner to feed, grow and multiply without interruptions.

As the worms and the bacteria eat and eat and the insect corpse is more or less hollowed out, the nematode eats the bacteria. This isn’t a double cross, but part of the move to greener pastures. The bacteria re-colonize the nematode’s guts so they can hitch a ride as it bursts forth from the corpse in search of a new host.

The next meal shouldn’t be hard to find either, since P. luminescens already sent them an invitation to the party. Just before they got got back in their nematode taxi, P. luminescens were at critical mass in the insect corpse, and scientists think that that many glowing bacteria attract other insects to the body and make the nematode’s transition to a new host much easier.

A Good Light

Looking at historical records of the battle, Bill and Jon figured out that the weather and soil conditions were right for both P. luminescens and their nematode partners. Their lab experiments with the bacteria, however, showed that they couldn’t live at human body temperature, making the soldiers’ wounds an inhospitable environment. Then they realized what some country music fans already knew: Tennessee in the spring is green and cool. Nighttime temperatures in early April would have been low enough for the soldiers who were out there in the rain for two days to get hypothermia, lowering their body temperature and giving P. luminescens a good home.

Based on the evidence for P. luminescens’s presence at Shiloh and the reports of the strange glow, the boys concluded that the bacteria, along with the nematodes, got into the soldiers’ wounds from the soil. This not only turned their wounds into night lights, but may have saved their lives. The chemical cocktail that P. luminescens uses to clear out its competition probably helped kill off other pathogens that might have infected the soldiers’ wounds. Since neither P. luminescens nor its associated nematode species are very infectious to humans, they would have soon been cleaned out by the immune system themselves (which is not to say you should be self-medicating with bacteria; P. luminescens infections can occur, and can result in some nasty ulcers). The soldiers shouldn’t have been thanking the angels so much as the microorganisms.

As for Bill and Jon, their study earned them first place in team competition at the 2001 Intel International Science and Engineering Fair.

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iStock / Collage by Jen Pinkowski
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The Elements
9 Essential Facts About Carbon
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iStock / Collage by Jen Pinkowski

How well do you know the periodic table? Our series The Elements explores the fundamental building blocks of the observable universe—and their relevance to your life—one by one.
 
 
It can be glittering and hard. It can be soft and flaky. It can look like a soccer ball. Carbon is the backbone of every living thing—and yet it just might cause the end of life on Earth as we know it. How can a lump of coal and a shining diamond be composed of the same material? Here are eight things you probably didn't know about carbon.

1. IT'S THE "DUCT TAPE OF LIFE."

It's in every living thing, and in quite a few dead ones. "Water may be the solvent of the universe," writes Natalie Angier in her classic introduction to science, The Canon, "but carbon is the duct tape of life." Not only is carbon duct tape, it's one hell of a duct tape. It binds atoms to one another, forming humans, animals, plants and rocks. If we play around with it, we can coax it into plastics, paints, and all kinds of chemicals.

2. IT'S ONE OF THE MOST ABUNDANT ELEMENTS IN THE UNIVERSE.

It sits right at the top of the periodic table, wedged in between boron and nitrogen. Atomic number 6, chemical sign C. Six protons, six neutrons, six electrons. It is the fourth most abundant element in the universe after hydrogen, helium, and oxygen, and 15th in the Earth's crust. While its older cousins hydrogen and helium are believed to have been formed during the tumult of the Big Bang, carbon is thought to stem from a buildup of alpha particles in supernova explosions, a process called supernova nucleosynthesis.

3. IT'S NAMED AFTER COAL.

While humans have known carbon as coal and—after burning—soot for thousands of years, it was Antoine Lavoisier who, in 1772, showed that it was in fact a unique chemical entity. Lavoisier used an instrument that focused the Sun's rays using lenses which had a diameter of about four feet. He used the apparatus, called a solar furnace, to burn a diamond in a glass jar. By analyzing the residue found in the jar, he was able to show that diamond was comprised solely of carbon. Lavoisier first listed it as an element in his textbook Traité Élémentaire de Chimie, published in 1789. The name carbon derives from the French charbon, or coal.

4. IT LOVES TO BOND.

It can form four bonds, which it does with many other elements, creating hundreds of thousands of compounds, some of which we use daily. (Plastics! Drugs! Gasoline!) More importantly, those bonds are both strong and flexible.

5. NEARLY 20 PERCENT OF YOUR BODY IS CARBON.

May Nyman, a professor of inorganic chemistry at Oregon State University in Corvallis, Oregon tells Mental Floss that carbon has an almost unbelievable range. "It makes up all life forms, and in the number of substances it makes, the fats, the sugars, there is a huge diversity," she says. It forms chains and rings, in a process chemists call catenation. Every living thing is built on a backbone of carbon (with nitrogen, hydrogen, oxygen, and other elements). So animals, plants, every living cell, and of course humans are a product of catenation. Our bodies are 18.5 percent carbon, by weight.

And yet it can be inorganic as well, Nyman says. It teams up with oxygen and other substances to form large parts of the inanimate world, like rocks and minerals.

6. WE DISCOVERED TWO NEW FORMS OF IT ONLY RECENTLY.

Carbon is found in four major forms: graphite, diamonds, fullerenes, and graphene. "Structure controls carbon's properties," says Nyman.  Graphite ("the writing stone") is made up of loosely connected sheets of carbon formed like chicken wire. Penciling something in actually is just scratching layers of graphite onto paper. Diamonds, in contrast, are linked three-dimensionally. These exceptionally strong bonds can only be broken by a huge amount of energy. Because diamonds have many of these bonds, it makes them the hardest substance on Earth.

Fullerenes were discovered in 1985 when a group of scientists blasted graphite with a laser and the resulting carbon gas condensed to previously unknown spherical molecules with 60 and 70 atoms. They were named in honor of Buckminster Fuller, the eccentric inventor who famously created geodesic domes with this soccer ball–like composition. Robert Curl, Harold Kroto, and Richard Smalley won the 1996 Nobel Prize in Chemistry for discovering this new form of carbon.

The youngest member of the carbon family is graphene, found by chance in 2004 by Andre Geim and Kostya Novoselov in an impromptu research jam. The scientists used scotch tape—yes, really—to lift carbon sheets one atom thick from a lump of graphite. The new material is extremely thin and strong. The result: the Nobel Prize in Physics in 2010.

7. DIAMONDS AREN'T CALLED "ICE" BECAUSE OF THEIR APPEARANCE.

Diamonds are called "ice" because their ability to transport heat makes them cool to the touch—not because of their look. This makes them ideal for use as heat sinks in microchips. (Synthethic diamonds are mostly used.) Again, diamonds' three-dimensional lattice structure comes into play. Heat is turned into lattice vibrations, which are responsible for diamonds' very high thermal conductivity.

8. IT HELPS US DETERMINE THE AGE OF ARTIFACTS—AND PROVE SOME OF THEM FAKE.

American scientist Willard F. Libby won the Nobel Prize in Chemistry in 1960 for developing a method for dating relics by analyzing the amount of a radioactive subspecies of carbon contained in them. Radiocarbon or C14 dating measures the decay of a radioactive form of carbon, C14, that accumulates in living things. It can be used for objects that are as much as 50,000 years old. Carbon dating help determine the age of Ötzi the Iceman, a 5300-year-old corpse found frozen in the Alps. It also established that Lancelot's Round Table in Winchester Cathedral was made hundreds of years after the supposed Arthurian Age.

9. TOO MUCH OF IT IS CHANGING OUR WORLD.

Carbon dioxide (CO2) is an important part of a gaseous blanket that is wrapped around our planet, making it warm enough to sustain life. But burning fossil fuels—which are built on a carbon backbone—releases more carbon dioxide, which is directly linked to global warming. A number of ways to remove and store carbon dioxide have been proposed, including bioenergy with carbon capture and storage, which involves planting large stands of trees, harvesting and burning them to create electricity, and capturing the CO2 created in the process and storing it underground. Yet another approach that is being discussed is to artificially make oceans more alkaline in order to let them to bind more CO2. Forests are natural carbon sinks, because trees capture CO2 during photosynthesis, but human activity in these forests counteracts and surpasses whatever CO2 capture gains we might get. In short, we don't have a solution yet to the overabundance of C02 we've created in the atmosphere.

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Nicole Garner
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History
How One Widow's Grief Turned a Small Town Into a Roadside Attraction
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Nicole Garner

Like many small towns, the southwest Missouri town of Nevada (pronounced not as the state, but as Nev-AY-duh) loves to tell tales. Incorporated in 1855, the 8000-person city was once a railroad hub and a former home to the outlaw Frank James, the elder brother of the more infamous Jesse James. But the one story Nevada residents love to tell above all others isn't about anyone famous. It's about an atypical above-ground grave in the town's oldest cemetery, the man who's interred there, and how he can't get any rest.

Scan of the Nevada Daily Mail from March 4, 1897.
Nevada Daily Mail; March 4, 1897.
Courtesy of the State Historical Society of Missouri.

On March 4, 1897, the body of a young man was found near Nevada, Missouri, apparently struck by lightning. The local newspaper, the Nevada Daily Mail, printed the story of his death that evening right next to the news that William McKinley had been sworn in as president that day; a bold-faced headline declared "Death Came Without Warning," and noted “His Clothing Torn From His Body." A reporter at the scene described how the body, which was found around 11 a.m., was unrecognizable at first. Eventually the young man's father identified him as Frederick Alonzo "Lon" Dorsa, and the coroner determined that an umbrella was the cause of Lon's electrocution.

Lon left behind a widow whose name was never mentioned in newspapers; to this day, other printed versions of the Dorsas' story omit her identity. But she had a name—Neva Dorsa—and her grief led her to commission a singularly peculiar grave for her husband—one that would open her up to years worth of ridicule and also make their small town a roadside attraction.

A funeral announcement in the Daily Mail noted that undertakers had prepared Lon's body in a "neat casket" before a funeral service set for March 7. A follow-up article the next day read that Lon's funeral was widely attended, with a large procession to the cemetery and burial with military honors. His widow—whose name was determined from a marriage license filed at the Vernon County courthouse showing that Lon married a Neva Gibson on February 12, 1895—had gone from a newlywed to a single mother in just two years.

But, Lon's first interment was temporary. Neva had arranged a grand resting place for her husband, which wasn't ready in the short time between his death and the funeral. Modern newspaper retellings of Lon and Neva's tale say she ordered a large, above-ground enclosure from the Brophy Monument Company in Nevada. A large piece of stone—some accounts say marble while others suggest limestone or granite—was shipped in via railroad car. When it arrived, the stone was too heavy to move, so a local stonecutter spent more than a month chiseling away before the piece was light enough to be pulled away by horses. A wire story described the stone tomb as being "12 feet long, 4 feet wide and 5 feet high. Its weight at completion was 11,000 pounds."

Before Lon’s body was placed inside, Neva made a few key additions—specifically a hidden pane of glass that let her view her husband:

"A piece of stone, covered to represent a bible [sic], is the covering of the aperture. It can be lifted easily by the widow's hand and when Mrs. Dorsa's grief becomes unusually poignant, she goes to the cemetery and gazes for hours at a time upon the face of her dead husband."

The Daily Mail covered the second tomb's installation with morbid attention to detail on May 6, 1897, precisely two months after Lon was initially buried:

"When the grave was opened this morning the coffin looked as bright and new as when buried but it had water in it which had at one time nearly submerged the body. The remains looked perfectly natural and there were no evidences of decomposition having sat in—no odor whatover [sic]. A little mould [sic] had gathered about the roots of his hair and on the neck, otherwise the body looked as fresh as when buried."

The newspaper called the tomb a "stone sarcophagus" and noted that Neva was there to examine her husband's corpse and watch the reburial of his remains. There was likely no inkling from those present, or the community who read about it in that evening's paper, that Neva had designed the tomb with unexpected and usual features, like the pivoting stone Bible that would reveal Lon's face below when unlocked and moved.

Instead, the newspaper suggested that the "costly mousoleum [sic] provided for the reception of his remains is the tribute of her affection."

Lon Dorsa's grave.
Lon Dorsa's grave at Deepwood Cemetery in Nevada, Missouri.
Nicole Garner

Following Lon's re-interment, Neva managed her grief by visiting her deceased husband regularly. Her home was near his grave—the 1900 U.S. Census listed her as a 25-year-old widow living on south Washington Street in Nevada, the same street as the cemetery—and three years after her husband's death, she was employed as a dressmaker, working year-round to provide for their young children, Beatrice and Fred.

By 1905, a new wave of public scrutiny hit the Dorsa (sometimes spelled Dorsey) family when the details of Neva's specially designed, above-ground grave began circulating. It's not clear who reported the story first, but the Topeka Daily Capital, published across the Kansas border 150 miles from Nevada, published a piece, which eventually spread to The St. Louis Republic. Early that spring, the same story was printed in the Pittsburgh Press, a Chicago church publication called The Advance, and in the summer of 1906, a description of Lon Dorsa's crypt had made it nearly 1000 miles to the front page of the Staunton Spectator and Vindicator in Staunton, Virginia:

"The strangest tomb in America, if not in the world, is that which rest the remains of Lon Dorsa in Deepwood cemetery, Nevada, Mo. It is so constructed that the widow can look upon her deceased husband at will, by the turning of a key in a lock which holds a stone Bible just above the remains."

Articles at the time noted that Lon's remains were in an airtight tomb and that scientists supposedly told Mrs. Dorsa that her husband's body would be well-preserved in those conditions, but decomposition had already taken place: "It [the body] has turned almost black, but the general outline of the features remains unchanged."

According to a 1997 walking tour pamphlet of Deepwood Cemetery, it wasn't long before community members caught on that Neva visited the cemetery all too often: "Fascinated children hung about to watch the lady arrive in her buggy. If she saw them, she'd go after them with a whip, shrieking like a madwoman …" the guide stated. Eventually, "her family had the pivot removed and the Bible cemented down."

Local lore suggests that the publicity and Lon's deterioration drove Neva to insanity. Some say she ended up in an asylum and died soon after—a fairly believable tale, considering Nevada was home to one of the state's hospitals for mental illness. However, a list of Deepwood Cemetery lot owners, found at the Vernon County Historical Society, doesn't have a burial space for Neva.

A more likely explanation—based on a listing on Find a Grave, a website that indexes cemeteries and headstones, and which matches Neva's personal information—suggests she simply remarried and moved to California. The California Death Index, 1945-1997, shows that a Neva (Gibson) Simpson died Dec. 30, 1945 in Los Angeles. The birth date and place match those of Neva (Gibson) Dorsa.

Newspaper clipping featuring a picture of a skull.
Nevada Daily Mail, Nov. 30, 1987. Courtesy of the State Historical Society of Missouri.
State Historical Society of Missouri

Wherever Neva ended up, Lon's body didn't exactly rest in peace. In July 1986, vandals broke into the town's most famous tomb and stole his head. It was recovered the following year in a Nevada home, but law enforcement and cemetery caretakers noted that the stone Bible, which had been cemented down for some time, was periodically ripped off the tomb.

Talbot Wight, the Deepwood Cemetery Board’s president at the time, told the Daily Mail in 1987 that Lon's hair, skin, and clothing were well preserved until vandals broke the encasing glass. "Evidently, he was still in pretty good shape until July," Wight said.

But when Lon's skull was photographed for the newspaper's front page, it featured no hair or skin, both of which likely decomposed quickly after being stolen if not before. The skull was buried in an undisclosed location away from the body so as to not tempt new grave robbers, and the tomb was re-sealed with marble in an attempt to prevent further damage.

Still, the story of Neva Dorsa and her husband’s remains hasn't died away. It circulates through southwestern Missouri, drawing visitors to Deepwood Cemetery to gaze at the stone plot—just not in the same way Neva had intended.

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