Newest symptom of climate change: Ancient mummies turning into ooze

Bodies mummified about 7,000 years ago in Chile are starting to rapidly degrade, the Harvard School of Engineering and Applied Sciences said Monday in an e-mailed statement. Tests by Harvard’s Alice DeAraujo and Ralph Mitchell show that microbes that flourish in an increasingly humid climate are turning the preserved remains of Chinchorro hunter-gatherers into “black ooze.”

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“Is there a scientific answer to protect these important historic objects from the devastating effects of climate change?” said Mitchell. “It’s almost a forensic problem.”

Mitchell, who has pinpointed the causes of decay in everything from the walls of King Tutankhamun’s tomb to Apollo space suits, worked with DeAraujo on mummies supplied by Marcela Sepulveda, professor of archaeology at the University of Tarapaca in Chile. While museums can control their environments to preserve artefacts, many Chinchorro mummies are buried just beneath the surface in valleys that are experiencing higher humidity levels due to climate change, Sepulveda said.

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