Cutting CO2 is a challenge we all must face. Solve the puzzle—one cut will suffice.
“Fold-and-Cut-Theorem”
For any shape with straight edges there is a way to fold a piece of paper so that this shape can be cut out with a single straight cut. The theorem was proved in 1998 by Anna Lubiw, and Martin and Erik Demaine; first examples by Kan Chu Sen were already seen in 1721 in Wakoku Chiyekurabe, Japan.
This puzzle was part of the arts-led project called Carbon Deli designed to engage the public in conversations around carbon removal technologies that launched at The Great Exhibition Road Festival (2022).
Watch the short film by Dilman Dila, in which students from the Uganda Youth for the Environment club demonstrate how to do the One Cut CO2 puzzle:
Imagine Alternatives 