Any good resources on emergence?

I am fascinated by the concept of emergence.

Are there any good resources and books on the subject? There are a few on Amazon, but after reading some of the reviews I fear they are full of new age mumbo jumbo. I am looking for something with a more scientific approach.

“Chaos” by James Gleick discusses emergent properties, IIRC.

At Home in the Universe is an OK read, if a bit pompous.