The culture critic Steven Shaviro describes a SF novel, Dark Eden, by Chris Beckett...

The novel is set on a dark planet, one that does not circle any sun. The only energy source is geothermal, arising deep within the planet’s core. Plant and animal life forms have evolved, using this energy for fuel. “Trees” and other plants draw up heat energy from deep beneath the planet’s surface, and provide the ecosystem with warmth and light...

This strange planet looks and feels a lot like Seattle in these past few days...