Listen to the yowling, ethereal sounds a Joshua tree can be made to make

Photo caption: Artist Scott Kildall waves his microcontroller over a Joshua tree, recording wavelengths of light that are not perceptible by humans. Photo credit: Carlos Jaramillo for NPR. Article by Christopher Intagliata. NPR – June 3, 2024.

The artist Scott Kildall is waving his hand over the contours of a Joshua tree, just inches from its spiky green, bayonet-like leaves. “If I get too close to it, it will prick me and draw blood,” he says. “And it’s done that before.” In his palm, he has a microcontroller — just about the size of a credit card. […]

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