Charting Ancient Hallucinogenic Genetic Landscapes Suspecting ancient teeth might hold genetic maps leading to answers about drug use in the old world , the researchers met a virtual wall in their research project. Until now, science hadn’t developed a way to test tooth calculus specifically for opiates, cannabis, and magic mushrooms : the substances that they suspected the 19th century Dutch farmers had been consuming. The two researchers contacted renowned forensic dentist, Dr. Dorthe Bindslev, from Aarhus University in Denmark, enquiring if traditional drug testing methods for blood and hair might be adapted to serve a new archaeological purpose. Their experimentation required mixing hydroxyapatite, the most prevalent mineral in tartar, with 67 drugs and drug metabolites including the legal stimulants caffeine, nicotine, and cannabidiol, and the controlled substances oxycodone, cocaine and heroin. The drug-fused tartar mixtures were scanned by a mass spectrometer which identified various molecules by their atomic weight and charge. A new paper published in