Horizon · SEASON 46
Why Do We Dream?
Episode 3 · 2009-02-10

- Documentary
Episode overview
Horizon uncovers the secret world of our dreams. In a series of cutting-edge experiments and personal stories, we go in search of the science behind this most enduring mystery and ask: where do dreams come from? Do they have meaning? And ultimately, why do we dream? What the film reveals is that much of what we thought we knew no longer stands true. Dreams are not simply wild imaginings but play a significant part in all our lives as they have an impact on our memories, the ability to learn, and our mental health. Most surprisingly, we find nightmares, too, are beneficial and may even explain the survival of our species.
60 minutes
Season 46 episodes
1. Why Are Thin People Not Fat?2009-01-26
2. Cannabis: The Evil Weed?2009-02-03
3. Why Do We Dream?2009-02-10
4. Can We Make a Star on Earth?2009-02-17
5. The Secret Life of Your Bodyclock2009-02-24
6. What's the Problem with Nudity?2009-03-03
7. How to Survive a Disaster2009-03-10
8. Who Do You Want Your Child to Be?2009-03-17
9. Why Can't We Predict Earthquakes?2009-03-24
10. Alan and Marcus Go Forth and Multiply2009-03-31
11. How Violent Are You?2009-05-12
12. Do I Drink Too Much?2009-12-22
13. The Secret You2009-12-22
14. Fix Me2009-12-22
15. Who's Afraid of a Big Black Hole?2009-12-22
16. Why Do We Talk?2009-12-22
17. How Long is a Piece of String?2009-12-22
18. How Many People Can Live on Planet Earth?2009-12-09