In 2022, we told you about a study reporting evidence that an ancient Peruvian people called the Wari laced the beer served at their feasts with hallucinogens—particularly a substance derived from the seeds of the vilca tree, which was common in the region during the Middle Horizon period (circa 850 CE) when the Wari empire thrived. This may have helped the Wari forge political alliances and expand their empire.

Now archaeologists have discovered direct evidence that the use of vilca was a common practice some 1,000 years earlier than the Wari, thanks to analysis of artifacts unearthed at Chavín de Huántar, located about 250 kilometers north of Lima, Peru. And the Chavín people may have used it for a different purpose: to reinforce social hierarchies by limiting consumption of those substances to an elite few, according to a new paper published in the Proceedings of the National Academy of Sciences.

There is ample evidence that humans in many cultures throughout history used various hallucinogenic substances in religious ceremonies or shamanic rituals. That includes ancient Egypt, as well as ancient Greek, Vedic, Maya, Inca, and Aztec cultures. The Urarina people who live in the Peruvian Amazon Basin still use a psychoactive brew called ayahuasca in their rituals, and Westerners seeking their own brand of enlightenment have been known to participate. The Wari empire lasted from around 500 CE to 1100 CE in the central highlands of Peru.

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For several years now, we've been following a tantalizing story indicating that the high heat of the ash cloud generated when Mount Vesuvius erupted in 79 AD was sufficiently hot to turn one of the victim's brain into glass. It remains a matter of debate in the archeological community, but a fresh analysis of the physical properties of the glass-like material found in the remains lends more evidence to the hypothesis, as detailed in a new paper published in the journal Scientific Reports.

As previously reported, the eruption of Mt. Vesuvius released thermal energy roughly equivalent to 100,000 times the atomic bombs dropped on Hiroshima and Nagasaki at the end of World War II, spewing molten rock, pumice, and hot ash over the cities of Pompeii and Herculaneum in particular. The vast majority of the victims died of asphyxiation, choking to death on the thick clouds of noxious gas and ash.

But a 2001 study in Nature, co-authored by Italian archaeologist Pier Paolo Petrone, estimated a temperature of 500° Celsius (932° Fahrenheit) for the pyroclastic surge that destroyed Pompeii, sufficient to kill inhabitants in fractions of a second. Back in 2018, we reported on Petrone's conclusion that inhabitants of Herculaneum may have suffered a similar fate. There was fracturing in the bones and "cracking and explosion" of the skullcaps, consistent with forensic cases where skulls burst from extreme heat.

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Scientists have demonstrated that an ancient human skull excavated from a tomb at Ephesos was not that of Arsinoë IV, half-sister to Cleopatra VII. Rather, it's the skull of a young male between the ages of 11 and 14 from Italy or Sardinia, who may have suffered from one or more developmental disorders, according to a new paper published in the journal Scientific Reports. Arsinoë IV's remains are thus still missing.

Arsinoë IV led quite an adventurous short life. She was either the third or fourth daughter of Ptolemy XII, who left the throne to Cleopatra and his son, Ptolemy XIII, to rule together. Ptolemy XIII didn't care for this decision and dethroned Cleopatra in a civil war—until Julius Caesar intervened to enforce their father's original plan of co-rulership. As for Arsinoë, Caesar returned Cyprus to Egyptian rule and named her and her youngest brother (Ptolemy XIV) co-rulers. This time, it was Arsinoë who rebelled, taking command of the Egyptian army and declaring herself queen.

She was fairly successful at first in battling the Romans, conducting a siege against Alexandria and Cleopatra, until her disillusioned officers decided they'd had enough and secretly negotiated with Caesar to turn her over to him. Caesar agreed, and after a bit of public humiliation, he granted Arsinoë sanctuary in the temple of Artemis in Ephesus. She lived in relative peace for a few years, until Cleopatra and Mark Antony ordered her execution on the steps of the temple—a scandalous violation of the temple as a place of sanctuary. Historians disagree about Arsinoë's age when she died: Estimates range from 22 to 27.

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