http://www.atlanticcouncil.org/publications/books/war-stories-from-the-future
Science fiction military tales - free to download!
Randal Munroe (of xkcd) explains Einstein's relativity using words you can understand.
"We've had many opportunities to change the course of history…"
Pay attention, as there won't be a repeat for quite awhile. Sequential odd days only hit six times in a century and this is the last one for the 21st.
The calendrical odd-man-out won't come again for 90 years, when Jan. 3, 2105 rolls around. Then it will be 1/3/5.
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