What do plants know about numbers? A certain spiral pattern commonly seen in sunflowers, pinecones, and many species of cacti contains some surprising numerical properties. In this brisk talk, Paul Dancstep investigates this pattern through several kinetic sculptures by artist John Edmark. These mesmerizing artworks provide a number of insights into the mathematical lives of plants.

May, 2019: John Edmark manipulates every angle in order to transform a crisis. Edmark's insatiable curiosity often gets him into trouble, but on occasion it leads him to invent ingenious devices that tempt others to eagerly squander their time. Sculpture video credits: Filming and Editing by Charlie Nordstrom, Soundtrack "Plateau" by Lee Rosevere.