Up Next
Back to Show
PBS Space Time
Why Do You Remember The Past But Not The Future?
Season 7
Episode 1
The laws of physics don’t specify an arrow of time - they don’t distinguish the past from the future. The equations we use to describe how things evolve forward in time also perfectly describe their evolution backwards in time. Why does the brain and the conscious experience that emerges from it, see the arrow of time so clearly? In other words why do we remember the past and not the future?
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
18:19
What if, just before we reach the bottom, we find out that reductionism fails?
19:03
The biggest news in cosmology in recent years is that dark energy may be fading away.
18:50
Does this also explain why there are no aliens?
16:58
Quantum energy teleportation may be as close as we get to transporter beams. But how close is that?
14:50
Why is there any matter in the universe? A new antimatter breakthrough at LHC holds clues.
16:30
There’s an extremely good chance that Earth once did have a ring system.
17:23
How is it possible to tell if a space rock will one day collide with the Earth?
15:58
Did you know that many of us have up to 4% neanderthal DNA?
16:35
What if the Big Bang was just an endless cycle?
19:39
Why are billions suddenly being pumped into fusion startups?
16:36
The universe should've collapsed after the Big Bang, but a light Higgs boson let us exist.
14:30
Maybe dark energy doesn't exist?