Authoritative publication
Editorial illustration · not evidence
Earliest Directly Dated Scientific Evidence of Cannabis Smoking
Worldwide historical-first evidence from peer-reviewed research
500 BCE
Record summary
Strong entry. Title fixed from absolute 'oldest cannabis smoking' to the narrower claim supported by the paper.
Record valueCannabinoid residues in wooden braziers dated to approximately 500 BCE
Record familyHistory / science
Current-holder confidenceHigh
Evidence gradeA
Registry statusRecognized
Assessment
Worldwide historical-first evidence from peer-reviewed research
What remains uncertain
State that this is among the earliest directly dated scientific evidence, not the first cannabis use in human history.
How this entry was assessedOpen methodology snapshot
01
Claim identified
02
Sources reviewed
03
Global scope assessed
04
Status published
For the complete review standard, see the verification methodology.
