What lives inside Earth and how do we get to it? Is there a "habitat" inside Earth's crust? ; Cracking into solid earth ; The two DNA revolutions
How do intraterrestrials change our basic notions of what life is like on Earth? Humans and other plants ; How to live inside a volcano ; Breathing rocks ; Living on the edge
How do intraterrestrials affect our conceptions of ourselves? Immortal microbes ; Rethinking our beginnings ; Equilibrium is death ; What can intraterrestrials do for us?
Conclusion : The future, maybe.
