Horizon
Season 46 Episode 2 - Cannabis: The Evil Weed?
Cannabis is the world's favourite drug, but also one of the least understood. Can cannabis cause schizophrenia? Is it addictive? Can it lead you on to harder drugs? Or is it simply a herb, an undervalued medicine? Addiction specialist Dr John Marsden discovers that modern science is finally beginning to find answers to these questions. John traces the cannabis plants' birthplace in Kazakhstan; finds the origins of our sensitivity to cannabis in the simple sea squirt; and finds out just what it does to our brains. He meets people who have been changed by this drug in drastically different ways - from those whose lives have been shattered to those who lives have been revived.
Episodes in Season 46
Why Are Thin People Not Fat?
60 min
Cannabis: The Evil Weed?
60 min
Why Do We Dream?
60 min
Can We Make a Star on Earth?
60 min
The Secret Life of Your Bodyclock
60 min
What's the Problem with Nudity?
60 min
How to Survive a Disaster
60 min
Who Do You Want Your Child to Be?
60 min
Why Can't We Predict Earthquakes?
60 min
Alan and Marcus Go Forth and Multiply
60 min
How Violent Are You?
60 min
Do I Drink Too Much?
60 min
The Secret You
60 min
Fix Me
60 min
Who's Afraid of a Big Black Hole?
60 min
Why Do We Talk?
60 min
How Long is a Piece of String?
60 min
