And on average, each page required 30 sheets of paper to print. So, in total, how many trees would this endeavor kill? Walker and Harwood estimate about 16 million, or 0.002% of the Amazon rainforest.

And the capacity is limited to only 100 sheets of up to legal-size pages, which means that if you print enough to take good advantage of the low running cost, you'll have to add paper fairly often.

A quick and dirty calculation reveals that you could print the entire internet on 136 billion pieces of standard 8-by-11 sheets of paper. Stack that many sheets of paper one on top of the other ...

Photocopy or print on this paper to produce clear sheets for presentation ... at a cost of $30 for 100 sheets as of October 2011.

A quick and dirty calculation reveals that you could print the entire internet on 136 billion pieces of standard 8-by-11 sheets of paper. Stack that many sheets of paper one on top of the other ...