When we sleep, we can hardly distinguish reality from a dream. So how do we know what’s real and what’s not? To scientists, something is “real” if its properties are determined prior to being measured. An apple can be green even when no one is looking at it. But the quantum world seems to be following different rules. And three scientists have recently won a Nobel prize proving our universe isn’t locally real. But if our world isn’t real, what is this place we live in? | Destiny Media