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Leprosy Probably Came to the UK with a Scandinavian Man

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Leprosy, an infection caused by the bacteria Mycobacterium leprae, has affected humanity for thousands of years, spreading from the Middle East to Europe during the Roman Empire. According to new research, the disease likely arrived in the British Isles in the 5th or 6th century with a young man from Scandinavia.  

In Britain, leprosy infection rates peaked between the 12th and 14th centuries, but the disease arrived much earlier. The remains of a man between 21 and 35 years old, known to scientists as Burial GC96, features some of the oldest evidence yet discovered for leprosy in Britain. In the journal PLOS ONE, researchers from the Netherlands and several UK universities identified changes to the bone that suggest leprosy, including lesions, joint damage and narrowing of the toe bones. They also used DNA testing to identify the particular strain of the leprosy-causing bacteria, which has been observed in other burials in medieval Scandinavia and Britain. 

Foot bones deformed by leprosy. Image Credit: Cnyborg via Wikimedia Commons // CC BY-SA 3.0

The man's remains were excavated from an Anglo-Saxon grave in Essex, England in the early 1950s. Radiocarbon dating shows that he was buried in the 5th or 6th century. Judging by DNA analysis and chemical testing of the man’s tooth enamel, which can reveal childhood origins, the man likely migrated to Britain from Europe, perhaps from southern Scandinavia. 

While Britain may not have appreciated the gift of an infectious disease from Scandinavia, the northern European region would be instrumental in finding a cure a few centuries later. The bacteria that causes the disease was first identified in Norway in 1873.

And Brits may have re-gifted that particular strain of leprosy to the New World; it's still found today in the American South.  

[h/t: Newswise]

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Stones, Bones, and Wrecks
9.7-Million-Year-Old Teeth Discovered in Germany Have Scientists Puzzled
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Dave Einsel, Stringer, Getty Images

Scientists in Germany say they've found ape teeth that are surprisingly similar to the teeth of an early human relative dating to millions of years later. As the Independent reports, the team of experts unearthed a pair of 9.7-million-year-old fossilized teeth that, they say, have some of the same features as the teeth of the hominid Australopithecus afarensis.

Scientists from the Natural History Museum in Mainz found the fossils a year ago in nearby Eppelsheim but have waited until now to publish their findings—partly because they weren't sure what to make of the puzzling discovery. Of the two teeth, a canine and a molar, the canine tooth bears a striking resemble to that from "Lucy," one of the first known ancient human relatives to walk upright, who lived in Africa some 3.2 million years ago.

"They are clearly ape teeth," researcher Herbert Lutz told local media in a press conference. "Their characteristics resemble African finds that are four to five million years younger than the fossils excavated in Eppelsheim. This is a tremendous stroke of luck, but also a great mystery."

They dated the fossils using the remains of an extinct horse which was found buried in the same spot. In their paper, the scientists describe the canine’s similarities to other remains found in the lower half of the globe, but they still don't have answers to many of the questions the report raises. They plan to continue examining the teeth for clues. The public will also have a chance to see the teeth for themselves, first at a state exhibition this month, and then at Mainz's Natural History Museum.

[h/t Independent]

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6 Pioneering Facts About Mary Leakey

Fossil bones and the earliest footprints of our human ancestors are just a few of Mary Leakey’s groundbreaking discoveries. Get to know the legendary paleoanthropologist, and learn how her serendipitous finds forever altered scientists’ understanding of human origins.

1. MARY LEAKEY WAS A BORN EXPLORER.

Mary Leakey (1913-1996), née Mary Nicol, was destined to be an explorer: Her father, Erskine Nicol, was a landscape painter, and the family traveled extensively through France, Italy, and Switzerland. While staying in a commune in southern France, 12-year-old Mary became interested in archaeology after meeting Elie Peyrony, a French prehistorian excavating a cave. Mary dug through his tiny finds—which included fine points, scrapers, and flint blades—and sorted them into an amateur classification system.

2. FOSSIL HUNTING WAS IN HER BLOOD ...

Leakey’s parents were artists, but hunting for fossils was part of her heritage: Her maternal great-great-grandfather was John Frere, an 18th-century English government official and antiquarian who’s credited with first recognizing Stone Age flint objects as early weapons and tools.

3. ... BUT SHE WASN'T A GREAT STUDENT.

Leakey was intelligent, but she also had a rebellious streak. As a teen, she was expelled from several Roman Catholic convent schools—once for intentionally creating an explosion in a chemistry lab. Figuring she wasn’t cut out for a classroom, Leakey never finished high school, and decided to pursue independent studies in art, geology, and archaeology at the University of London instead. (“I had never passed a single school exam, and clearly never would,” the scientist later wrote in her 1986 autobiography Disclosing the Past.)

4. LEAKEY WAS AN ARTIST WHEN SHE MET HER FUTURE HUSBAND AND RESEARCH PARTNER, LOUIS LEAKEY.

Mary Leakey—who inherited her father’s artistic skills— ended up working as an illustrator for archaeological digs. An archaeologist introduced her to Cambridge University paleontologist Louis Leakey, who needed an illustrator for his book Adam’s Ancestors (1934). The two became lovers, but their union resulted in scandal, as Leakey was still married at the time. The couple married in 1936, after Leakey divorced his first wife.

5. MARY LEAKEY'S FIRST BIG DISCOVERY WAS PROCONSUL AFRICANUS.

Mary Leakey's first major discovery came in 1948 when she found a fossil skull fragment of Proconsul africanus, an ancestor of apes and humans, which later diverged into two separate species. The fossil was thought to be more than 18 million years old.

6. ANOTHER ONE OF MARY LEAKEY'S FAMOUS FINDS CAME COURTESY OF ELEPHANT POOP.

In 1978, Leakey was on an expedition in Laetoli, in Tanzania, when members of her camp engaged in a spirited elephant dung fight. A scientist fell down, and he noticed strange indentations on the ground that had been recently exposed by erosion. They turned out to be tracks made around 3.7 million years prior, from animals that had walked over damp volcanic ash. Examining these prints took several years, but the team's efforts paid off when Leakey noted that one of the prints seemed to be made by a hominin. This discovery showed that early humans began walking upright long before scientists thought they had.

Additional source: Ancestral Passions: The Leakey Family and the Quest for Humankind's Beginnings, Virginia Morell

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