.. This thread may be a one post 'wonder'..{what you're reading now}; Or even perhaps, a long-running series of 'multi'-person posts, pertaining to this {post's} subject!?
 
Since part of what I titled this post..'this past week'; Only refers to the 7 days preceding, Re. what.. if anything, you learned; And decided to contribute. {If per chance you learned something of general interest, 2 weeks ago; Don't let that deter you!}.
 
Also, please refrain from mentioning the obvious; such as, 'Obama' beat 'McCain'; Or character 'assasinations', which may or may not be true, {or somewhere inbetween}; but otherwise, has Less relevence, to.. let's say, what the precise temperature & wind-speed, was, at the 'South Pole' today!
 
Now for the first submission, {my own, of course}, under this 'thread.'
 
Thanks to my 'surfing' on the 'www'; I learned, from first having looked up "rubiks cube," on "Wikipedia"; That there are also puzzle competitions, {if more loosely organized}, pertaining to '4D' & '5D,' {"D," as in "dimensions"}, graphic-sketched problems; Which given our own '3D' {earthly} constraints; Can only be worked on, via specialized computer software.
 
Here's a 'Web' link, to an inscrutable.. to myself, "5D Magic Cube," pictured puzzle problem; And it's safe to say, that I Won't be losing any sleep, as to its solution!
http://www.gravitation3d.com/magiccube5d/hallofinsanity.html