Kaprekar's Number on Aug 19
Vortex Smoke Ring Collision is Today's BIG Thing in Technology - AUG 04, 2009 on Aug 17
MIT TechTV – Bokode: Imperceptible Visual Tags for Camera Based Interaction from a Distance on Jul 28
Ion engine could one day power 39-day trips to Mars - space - 22 July 2009 - New Scientist on Jul 26
HexClock (Part 2) on Jul 20

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