An engineering student from the University of California, Berkeley has used computer models to help the Smithsonian Institution preserve its art collection. As part of her research, she also figured out why the Mona Lisa is cracked.

The student, Allison Kunz, worked with the Smithsonian's Museum Conservation Institute to develop a computer model that could simulate the effects of temperature and humidity on paintings. This model helped the museum to determine the best way to store and display its artwork in order to minimize damage.

Kunz also used her computer model to investigate the Mona Lisa's cracks. She found that the cracks were caused by a combination of factors, including the painting's age, the materials used to create it, and the way it was stored and displayed over the years.

Kunz's research has helped the Smithsonian to better preserve its art collection and has also shed light on the Mona Lisa's cracks. Her work is a valuable contribution to the field of art conservation.