Showing posts with label famine. Show all posts
Showing posts with label famine. Show all posts

Sunday, August 2, 2015

Archaeology Meets History: The Grateful Dead Of Jamestown - http://clapway.com/2015/08/02/archaeology-meets-history-the-grateful-dead-in-jamestown-111/

Several hundred years ago, a chaplain, a soldier, a nobleman and an explorer were brought together to establish the original British settlement in America. They faced hardship in disease, diet scarcity, native animosity, violence and intra-community struggles. And they may have been forgotten forever if not for a recent dig, which identified their bodies 400 years after their death.


ARCHAEOLOGY AND HISTORY


These four historical icons’ confirmation were announced on Tuesday, at Smithsonian’s National Museum of Natural History. The team of researchers responsible for the find was led by anthropologist Douglas Owsley, and together they confirmed the identity of these deceased settlers. Uncovered in the chancel of Jamestown’s historic 1608 church, the place Pocahontas married John Rolfe, are the remains of Reverend Robert Hunt, Captain Gabriel Archer, sir Ferdinando Wainman, and Captain William West.


“We have discovered four of the first leaders of the whole English enterprise in America,” said James Horn, the president of the Jamestown Rediscovery archaeology project.


THE PRIVILEGED DIE, TOO


In the year 2010, when archaeologists first discovered the 1608 church, they knew immediately that these deceased were once men of stature, i.e. rich and entitled, since burial under a chancel

is traditionally reserved for the most important members of an Anglican church.


The graves’ excavation started in 2013.


MULTIFARIOUS EMPIRICAL METHODS USED FOR STUDY


Despite the fact that only 30% of the skeletons remained intact enough for study, the scientists involved in the study were able to identify the ruined bodies with the help of reliably disparate evidence, including the relatively ritualistic way in which they were buried, chemical analyses of bones and surrounding material, genealogical research and 3D imaging technology.


E.g., with a little study of the teeth, forensic experts were able to deduce each of the mens’ age of death. This was then cross-referenced with old baptismal records and attendance at universities.


These deceased teeth also shed light on how long each of the men had lived in the settlement. Why does this matter? It turns out those whom had left the Old World for the New tended to develop serious decay and abscesses in their teeth. Owsley thinks the change in diet was responsible for this. While these men were in England, the men ate mostly barley and wheat, but, in America, they’d switched to corn, whose sticky carbohydrates are more inimical to dental health.


When the data from these remains is conjoined into an image, we construct a story of life, death and religious beliefs during a critical twist in history during a time of mass settlement. This shows us a time when humble beginnings faced annihilation by famine and disease every single day.


 



 


FORTUNATELY, YOU DON’T HAVE TO STRUGGLE TO HYDRATE




Archaeology Meets History: The Grateful Dead Of Jamestown

Friday, May 29, 2015

Epigenetic Study: How Environments Affected Ancient Humans - http://clapway.com/2015/05/29/new-epigenetic-study-how-environments-affected-ancient-humans123/

A new study from The University of Texas at Austin concluded that there are epigenetic marks on DNA that can be found in a high degree of ancient human remains, and that these signs can shed light on the effects that the natural environment had on ancient populations.


Explaining epigenetic marks


Epigenetics examines the chemical adjustments to DNA. These modifications are known as epigenetic “marks,” and they contribute to deciding which genes are expressed. Typically, epigenetic marks stay constant throughout a person’s life, but can be altered when environmental factors like diseases, climate and diet come into play. Moreover, if such an alteration is made to sperm or egg DNA, the changes on DNA will become hereditary.


The study looks at these epigenetic marks of ancient humans, and attempts to understand the genes that are expressed during their lives, as well as how environmental factors have molded their physical traits and health properties throughout generations.


Studying epigenetics in North America


The team of scientists searched specifically for the epigenetic mark known as cytosine methylation. They sought this mark in the ancient remains of 30 humans from five archaeological sites throughout North America. The remains ranged from 230 to more then 4,500 years old. Fortunately, the scientists recovered samples of cytosine methylation in a surprising 29 of the remains.


To study these marks, the researchers employed a technique called bisulfite sequencing, a method popularly used to study methylation in modern DNA. Initially, they didn’t think that this technique would work on ancient DNA, as it reduces the DNA. Fortunately, the results proved otherwise.


The successful study proves that examining ancient DNA from concentrate archaeological populations could potentially give us a lot of insight into how natural environments in the past affects populations and societies. This could tell us even more about the lives that ancient humans lived.


Previous studies examining epigenetic marks


One of the most notable studies of epigenetics was of people who suffered from famine in utero during World War II. The study showed striking changes in epigenetics that related directly to diet, metabolism and physical growth. Other current DNA studies show that the changes in epigenetics are related to types of cancer, and potentially to the development of cancer.



Epigenetic Study: How Environments Affected Ancient Humans