Mentions of fully-formed PLATO games like Moria and a half dozen others also was the first thing to jump to mind when the parent description suggested that Adventer was the "origin" of many things. Sorry, no. Adventure was cool and it was an important and influential piece of art, but it did not precede DnD paper and pencil, nor did it precede a number of much more dungeon-crawl 'rpg's, nor was it the first adventure game. oops.

The SF Chronicle has degraded from a real newspaper to a poorly edited regurgitation in many cases. This seems to be a case where the author of the piece didn't actually check their facts.

I believe the "third" quote is just an error:
"There are about 21 million acres of trees spread across Californiaâ(TM)s 18 national forests, and the latest figures show 7.7 million of them â" more than one-third â" are dead. "

This quote is linked-cited to their other paper site, sfchronicle, and that article does not give those same numbers.

The sfchronicle article links to this http://www.fs.fed.us/sites/default/files/DROUGHT_book-web-1-11-16.pdf

The New York Times version of the article does NOT make the same "third are dead" claim and it links to a USDA release:

http://www.usda.gov/wps/portal/usda/usdahome?contentid=2016/11/0246.xml&contentidonly=true

That also does not make the "third are dead" claim.

As a non-professional forest person in California, the claim that a third of forested acres are "dead" or that a third of all trees are dead is demonstrably absurd.

I think someone slipped a digit somewhere and sfgate's editing is no longer good enough to trust anyone checked it. If anyone happens to see any original source making this claim, please let me know.

[losing 30 minutes of work because of slashdot software annoyance, do not edit in text fields :( ]

Here's my thought: print in RGB separations using black and white printer on good paper, so you have a much more robust representation of the color value than done in colored inks overlapping one another, yet still have a version that is human comprehensible. This means 3 'pages' per photo, with grayscale pixels.

A more digital (binary) version would be to use a 6x6 on/off pixel square for each image pixel (6 times 6 is 36, leaving 32 bits per pixel and 4 'extra' values). The image is printed on paper in these pixel blocks that represent the R, G, or B value for that pixel, with a 1 pixel 'gutter' around each one. The picture should still be comprehensible by humans, although less so than the analog version. With a printer that can do 800x800DPI printing, I think that gets one down to 11x17" (american 'tabloid' size) paper that a 1600x1200 photo would fit onto.

Laser printed neutral paper, kept out of sunlight, kept dry, should be scannable for a very, very long time. Putting either of those back together would be 'relatively' simple.

If you're looking for 'easy', as other say 'museum quality' oversize photo printing seems like the obviously best choice.