[aruanan]

The thesis of the book is that oil and gas is renewable and being replenished deep underground.

Well, the thesis is that petroleum is being formed from primordial methane that is cracked by passage through various rock pores and temperature gradients into longer and longer hydrocarbon chains and forming petroleum and coal deposits (as well as methane). So the near-surface pools are being replenished, but the original methane deposits are still being depleted through outgassing. It behooves us, therefore, to trap and use it before it is released to the atmosphere to be oxidized to CO2. That's good for the plants, but it robs us of an energy resource along the way.

The hot, deep biosphere consists of bacteria that live at depth on the oil, the methane, and other chemical energy sources, though they aren't the source of the petroleum.

[vbmoneyspender]

As I stated previously, the other conclusion one can draw from this evidence is that life started in the mantle and slowly moved outwards into the crust, then the oceans and ultimately onto land. If this is what happened, then there may be life inside all of the rocky planets plus a number of the moons.

[UCANSEE2]

though they aren't the source of the petroleum.

Maybe they eat it.