In whatever form it takes, life sings because it has a song. The meaning is in the lyrics.

Reality is observer-determined - it's a spatio-temporal process, which fortunately means that things must change.

When you turn from one room to the next, when your animal senses no longer perceive the sounds of the dishwasher, the ticking clock, the smell of a chicken roasting - the kitchen and all its seemingly discrete bits dissolve into nothingness - or into waves of probability.

Any universe that could have preceded consciousness only existed in a probability state.

In whatever form it takes, life sings because it has a song. The meaning is in the lyrics.

In fact when you combine stem cell technology with the technology known as tissue engineering you can actually grow up entire organs, so as you suggest that sometime in the future you get in an auto accident and lose your kidney, we'd simply take a few skin cells and grow you up a new kidney. In fact this has already been done.

So someday in the near future hopefully rather than having a foot or a leg amputated we'll just give you an injection of the cells and restore the blood flow. We've also created entire tubes of red blood cells from scratch in the laboratory. So there are a lot of exciting things in the pipeline.