When it comes to detecting biomarker chemicals in a person's body, sweat-analyzing sensors offer a less painful alternative to blood sampling. A new wearable sensor takes a unique approach to ...

The use of cactus spines in place of steel needles in phonographs, gramophones and other talking machines opens up a profitable industry for the country about Tucson. "Without any preparation at all ...

Sculptor Melissa Martinez, 29, combines materials like cactus needles and concrete into stark, elegiac pieces about the natural world vanishing beneath the pavement of our eternally expanding city.