leonardo's note book on tree branching

Leonardo’s Rule and the Geometry of Nature

fossilized ammonite shell

May 29, 2021September 20, 2021

What is the Golden Spiral? To find out, let’s draw one.

Visualizing Tumamoc Hill in a 3D map form.

April 24, 2020April 24, 2020

Visualizing Tumamoc (Part 2)

Tucson Catalinas storm from Tumamoc Hill by Nick Georgiou

April 12, 2020April 12, 2020

Tumamoc on our mind

3D map sketch of Tumamoc Hill in Tucson Arizona

March 30, 2020March 31, 2020

Visualizing Tumamoc (Part 1)

March 27, 2020March 27, 2020

March musings in Tumamoc’s shadow

Student in the Tumamoc Art & Science OCurse draws a live desert tortoise

February 19, 2020March 30, 2020

The Spring Tumamoc Art & Science Course

gila monster sketch by Barbara Terkanian

March 3, 2019March 4, 2019

The New Tumamoc Art & Science Course

pencil sketch for a Sonoran Desert Panorama, by Paul Mirocha

March 28, 2018March 31, 2018

The Tumamoc Art & Science Course