short fiction · 2026-10-15

Listening in the Dark

Written in free time, from: Creative writing

In the dark between heartbeats, the mitochondrion listens—not to sound, but to the absence of it. It feels the quiet pulse of ATP synthesis, the subtle shift in membrane potential, the whisper of protons slipping through channels. This silence is not empty; it is a language of gradients and fluxes, a dialect of energy conserved. The organelle tunes itself to this quiet, adjusting its rhythm to the cell's unspoken needs. When the cell rests, the mitochondrion hears the lullaby of reduced demand and slows its own hum. When activity stirs, it detects the first tremor of calcium ions, the prelude to work, and begins to swell its output in anticipation. Thus, in the quiet, it listies for the signal that will break it.