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 ...

I was up in the White Mountains this weekend, walking out to my car in the AMC’s Highland Center parking lot after a hike, and there between the buildings and the cars was a gorgeous aspen tree ...

Artist Scott Kildall waves his microcontroller over a Joshua tree, recording wavelengths of light that are not perceptible by humans. (Carlos Jaramillo for NPR) The artist Scott Kildall is waving his ...