By: Stephanie Pappas, LiveScience Senior Writer Published: 11/21/2012 04:03 PM EST on LiveScience A noble-but-brutal Renaissance warrior who fell to a battle wound may not have died exactly as historians had believed, according to a new...
his report on a male head revealed biologic rhythms, as gleaned from hydrogen isotope ratios in hair, consistent with a South-American origin and Atomic Mass Spectrometry radiocarbon dating (AMS) compatible with the last pre-Hispanic period (1418–1491 AD, 95.4% probability). Biopsies showed exceptionally well-preserved tissues. The hair contained high levels of toxic elements (lead, arsenic and mercury) incompatible with life. There was no evidence for lead deposition in bone consistent with post-mortem accumulation of this toxic element in the hair. We propose that the high content of metals in hair was the result of metabolic activity of bacteria leading to metal complexation in extra cellular polymeric substances (EPS). This is a recognized protective mechanism for bacteria that thrive in toxic environments. This mechanism may account for the tissues preservation and gives a hint at soil composition where the head was presumably buried. Our results have implications for forensic toxicology which has, hitherto, relied on hair analyses as one means to reconstruct pre-mortem metabolism and for detecting toxic elements accumulated during life. Our finding also has implications for other archaeological specimens where similar circumstances may distort the results of toxicological studies.
Extraordinary photos (11) show a bonobo - also known as a pygmy chimpanzee - named Kanzi collecting wood, breaking it up and putting it into a pile before striking a match to light the fire, and then cooking his meal on the fire.
"An international team of researchers (...) has for the first time sequenced the genome of a man who was an Aboriginal Australian. They have shown that modern day Aboriginal Australians are the direct descendents of the first people who arrived on the continent some 50,000 years ago and that those ancestors left Africa earlier than their European and Asian counterparts."
A necropolis with over 100 burials has been unearthed during archaeological excavations near the village of Marten in northern Bulgaria.
The discovery was made by the archaeologist from the Archaeology Museum in the Danube city of Ruse, Deyan Dragoev.
The necropolis is on the path of the future gas connection between Bulgaria and Romania.
The site includes tombs from the Thracian times to the times of the First Bulgarian Kingdom. The oldest ones date from the 5th – 4th centuries B.C. Some reveal very interesting rites such as the tomb of a decapitated soldier, whose head was laid on his lap, while others have been buried with gold and silver jewelry or with their dogs.
Ancient plants and the ways in which humans interacted with them can be explored through the traditional methods, examining organic remains in the lab and under the microscope...Therefore, this thesis will explore a number of case studies in which...
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