Time is a 2006 documentary television series first broadcast on BBC Four in the United Kingdom. It is written and presented by Michio Kaku.
- "Daytime", exploring human perception of time in day-to-day life
- "Lifetime", the effect of aging on human perception of time, and research into extending the human lifespan
- "Earth Time", how an understanding of geological time changes the human race's perception of itself
- "Cosmic Time", the current understanding of the nature of time on a cosmic scale