Let's not waste resources
We don't want to stop printing! We simply think that sometimes, people, and not everyone, need reminding that wasting paper, ink and toner doesn't make economic nor environmental sense.
Re-use single sided printed sheets
Consider how many times an almost completely blank "page 2 of 2" comes out of your printer when printing emails and documents. Single sided printing wastes 50% of the resource.
Not just email
Every day, people hit the print button without really considering why. This stems from hardcopy being a comfort blanket which is irrational in the 21st Century.