Who what or when was marijuana first "discovered"?

Question

Who what or when was marijuana first "discovered"?

Answer 1

If you are asking how long have we known about the effects of marijuana, the answer to that is more than 4500 years.  Its first recorded use in medical treatment dates from China around 2737 BC. from where it spread to India and onward to the West.

Answer 2

The ancient historian Herodotus wrote in 525 BC or thereabouts that the Sythians took steam baths and threw hemp seeds onto hot rocks to become very excited.

But according to the World Hemp Historical TimeLine, hemp was used for intoxication in central Europe as far as 7000 BC and in China around 6500 BC.  

Answer 3

Marijuana's been around since the beginning of time. It did not even become illegal until the 1930's.