130-200 Greek physician Galen prescribes medical marijuana.
200 First pharmacopoeia of the East lists medical marijuana. Arabic physician Ibn Wahshiyah's warns of marijuana's potential dangers.
1526 Babur Nama, first emperor and founder of Mughal Empire learned of hashish in Afghanistan.
6,000 BCE Cannabis seeds and oil used for food in China.
700-300 BCE Scythian tribes leave Cannabis seeds as offerings in royal tombs.
500 BCE Scythian couple die and are buried with two small tents covering containers for burning incense.
As explained by Richard Hamilton in the 2009 "Modern humans emerged some 250,000 years ago, yet agriculture is a fairly recent invention, only about 10,000 years old ...
Agriculture is not natural; it is a human invention.
National Cancer Institute, US NIH, 2011 American Nurses Association Position American College of Physicians Position American Public Health Assoc.