A tale of touching tubes
Mathematicians find way to put seven cylinders in contact without using their ends
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/04/dm_7-cylinders.jpg?fit=860%2C460&ssl=1)
NO IFS, ASHES OR BUTTS Seven cylinders can each touch each other using only their sides, not their ends, mathematicians have discovered.
D. Mackenzie