Download for full size at 1920x1200.
This is a creative commons image. Do with it as you will, so long as you credit the source.
(I wish there was a "technical" or "educational" category...)
A wallpaper based upon the David Hillis, Derrick Zwickl, and Robin Gutell version of the circular phylogenetic "tree of life." I admit that I am rather aesthetically biased, but circular versions are widely considered to be the most accurate, thanks to the lack of any suggested hierarchy.
The caption, "The Blind Watchmaker," is of course a reference to the Intelligent Design debate, and was used as the title of Richard Dawkins' famous book. Intelligent Design supporters claim that life contains irreducible complexity, which can only be explained by an intelligent designer. This is not the case: what we see instead is a clear progression of transitional forms extending into the past, each level of complexity being easily reduced and explained by the natural processes of evolution. From simplicity may arise infinite complexity, which is why evolution itself may be considered "the blind watchmaker."
Because I fully expect someone to begin foaming at the mouth in the comments section, I would like to direct anyone curious about evolution to this explanatory series of videos: [link]
Any questions about evolution, or suggestions regarding typography etc. are welcome.
I was delighted to find the resource stock for this massive image here, [link]
which is available to anyone so long as the application is non-profit and gives credit to the source. I warn you, it prints to a full size of almost five feet across.
Background paper texture was used courtesy of this deviant: [link]