Beneath a city sidewalk, normal life takes on a different character. Here, “under feet” means a labyrinth of conduits: water pipes, gas lines, fiber-optic cables, steam tunnels, and subway rails. This is not nature, but infrastructure—yet it has its own ecology of maintenance workers, rodents, and stray voltage.

Beyond human structures, the most profound “normal life under feet” exists in soil. A teaspoon of healthy soil contains more microbes than there are people on Earth. Here, nematodes, mycorrhizal fungi, springtails, and earthworms form a food web that enables all terrestrial life. For these organisms, the surface is a hostile zone of UV radiation and desiccation. Their normal consists of chemical signaling, decomposition, and symbiosis with plant roots.

Why do we overlook life underfoot? Partly, it is practical: we cannot process infinite stimuli. But partly, it is cultural. Western thought has long privileged the visual and the elevated—the sky, the horizon, the peak. Ground is for the dead, the buried, the forgotten. To look down is to be submissive or morbid.

Yet ignoring the underfoot has consequences. We seal soil under asphalt, disrupting hydrology. We sterilize floors with bleach, collapsing micro-ecosystems. We treat the subsurface as a dumping ground for toxins and forgotten utilities. A more attentive stance—one that acknowledges the normal lives of mites, microbes, and maintenance crews—could foster humility and ecological wisdom. As the naturalist John Muir noted, “When we try to pick out anything by itself, we find it hitched to everything else in the Universe.” That hitching begins at our soles.