Latest news

How cannabis helped to ease the pain of changing times
Why did cannabis become so popular in the 1960s? And why is it even more popular today?
Project CBD response to California cannabis testing regulations
Project CBD critiques California’s proposed regulations for cannabis testing regarding pesticides, heavy metals, and solvents and makes recommendations for amending them.
Animals know how to use medicinal plants
Humans aren't the only species who know how to ingest medicinal plants for their health. Discover the botanical remedies that other animals take, and why they have evolved to do so.
How much THCA to take
THCA (tetrahydrocannabinolic acid) is the non-psychoactive acid form of THC found in the plant when raw. THCA converts to THC when it is decarboxylated. Discover the clinical and laboratory research on THCA for epilepsy, chronic pain, digestive disorders, and more.
The genus Cannabis has been seen and felt as a being, or a deity, in multiple cultures. This book excerpt by Kathleen Harrison discusses some of the historical cultural and spiritual uses of the cannabis plant across the globe.

Essential reading

Cannabis is personalized medicine. The right treatment depends on the person and condition being treated. For maximum benefit, choose cannabis products that include both CBD and THC.
Cannabidiol—CBD—is a cannabis compound that has significant medical benefits, but does not make people feel “stoned."
With the growing awareness of CBD as a potential health aid there's also been a proliferation of misconceptions. Find questions and responses to common misinformation.
Project CBD science advisor Jahan Marcu, PhD, reports on the hidden dangers of propylene glycol and vape pens that smolder.
Medical cannabis research shows that CBD may be therapeutic for many conditions.

Smoke Signals: The Book

Smoke Signals: A Social History of Marijuana

Get the book by Project CBD director Martin A Lee

  • Winner of the American Botanical Council’s James A. Duke Excellence in Botanical Literature Award
  • “Every American should read this landmark book!” — Douglas Brinkley
Get the book

Upcoming events

Map of upcoming events
London , United Kingdom
Jun 30, 2017 to Jul 2, 2017
Seattle , Washington , United States
Aug 18, 2017 to Aug 20, 2017
Cologne , Germany
Sep 29, 2017 to Sep 30, 2017