martes, 1 de noviembre de 2016

Bones at famed Stone Age site are turning into jelly


 
Ten thousand years ago, Stone Age hunter-gatherers built houses, tracked game, and conducted elaborate shamanic rituals among the wetlands of North Yorkshire in the United Kingdom. When archaeologists uncovered this Mesolithic dwelling known as Star Carr in 1948, they found well-preserved headdresses made of deer antler, as well as animal bones and wooden and bone tools. Revisiting the site 50 years later, researchers discovered its waterlogged wood rapidly and mysteriously breaking down and many of its bones literally turned to jelly. These “jellybones,” as the authors refer to them in a paper published today in the Proceedings of the National Academy of Sciences, have only arisen recently because Star Carr’s mucky, low-oxygen wetland prevented the site’s archaeological treasures from breaking down [...]  Science | AAAS / Link 2