“Eco Sans” is a new font by the Dutch communications firm, Spranq.
How much of a letter can be removed while maintaining readability? Apparently punching little circles out of each letter is the answer, resulting in a font that uses up to 20 percent less ink.
Also of interest:
More about art and the Environment
10 Ways Design Can Fight Climate Change
Save the Planet while Brushing your Teeth
Disturbing animation against global warming