I found so many things about this exhibition interesting.
As an architecture student, I found the mycelium construction materials intriguing. Phil Ross calls it mycotecture. I was curious about the properties of the bricks, especially in relation to longevity and their conductive/insulative properties, and also whether they have similar structural strength to regular bricks.
I went to his web page to find more (http://philross.org/projects/mycotecture/#projects/mycotecture/), but it seems this experiment is in the very early stages so he doesn’t have any of this information.
The other exhibit I found most interesting was by Alison Kudla. I’m not sure I fully understood, but it seemed that this printer deposited biological material onto a square substrate using an algorithm related to the Eden growth model. While it wasn’t working when I visited, I was intrigued by the idea of printing something living.
She had also created these beautiful tiled patterns in petri dishes of organic material, and the color change comes from the decay and decomposition.
The book which accompanies the exhibition can be downloaded for free here: http://millergallery.cfa.cmu.edu/nasabook/newartscienceaffinities.pdf