Cactus Spines Inspire Diagnostic Tools Without the Prick

It wicks away tiny droplets of sweat from the skin’s surface

Article via LabRoots.

Did you know that there are over 1700 species of cacti — spiny plants that have evolved to survive some of the harshest environments on earth. Over the course of their evolutionary history, most species of cacti have lost their leaves, swapping them for spines — structures that help reduce water loss by minimizing airflow around the body of the cactus.