Human consciousness - NOT amateur radio

This is a big question. As far as I know, science has not yet answered it.

One of the greatest mysteries in the world is human consciousness. What makes us sentient beings? What is it that makes us able to contemplate our very existence? Can other animals, albeit differently, be sentient beings? What happens when we die and have no body?

As I have said many times before, it is a brave person that claims to have answers. We live in a universe where we are aware of a few dimensions. There may be other dimensions and indeed other universes that our small brains are simply incapable of understanding. When we die we may simply cease to exist and be as we were for ever before. Perhaps something of us survives death in some form. Maybe time itself is an illusion. Maybe space is an illusion.

One day science may be able to answer some of these questions, which all religions have tried to answer. For now, I remain puzzled.