Horizon
Season 45 Episode 15 - Do You Know What Time It Is?
Particle physicist Professor Brian Cox asks, 'What time is it?' It's a simple question and it sounds like it has a simple answer. But do we really know what it is that we're asking? Brian visits the ancient Mayan pyramids in Mexico where the Maya built temples to time. He finds out that a day is never 24 hours and meets Earth's very own Director of Time. He journeys to the beginning of time, and goes beyond within the realms of string theory, and explores the very limit of time. He discovers that we not only travel through time at the speed of light, but the experience we feel as the passing of time could be an illusion.
Episodes in Season 45
How to Kill a Human Being
60 min
Total Isolation
60 min
What on Earth is Wrong With Gravity?
60 min
Is Alcohol Worse than Ecstasy?
60 min
How to Make Better Decisions
60 min
How to Live to be 101
60 min
Prof. Regan's Supermarket Secrets
60 min
Are we Alone in the Universe?
60 min
How Much is Your Dead Body Worth?
60 min
How Does Your Memory Work?
60 min
The President's Guide to Science
60 min
How Mad Are You? (1 of 2)
60 min
How Mad Are You? (2 of 2)
60 min
Jimmy's GM Food Fight
60 min
Do You Know What Time It Is?
60 min
Allergy Planet
60 min
Where's My Robot?
60 min
