The only consciousness you can ever be certain about is your own. But there are different types of clues that could hint at what's happening within another entity.
If consciousness is a by-product of our brains' nonconscious processes, where does that leave us?
A resonance theory of consciousness suggests that the way all matter vibrates, and the tendency for those vibrations to sync up, might be a way to answer the so-called 'hard problem' of consciousness.
Researchers' views depend in part on what technology is (or will be) capable of – and in part on what consciousness actually is.
There remain many mysteries that are beyond science. Does that mean that a God truly exists? A scholar gives reasons for this possibility.