What you're watching is a design of a robotic red blood cell, and it does bring up the issue that our biology is actually very sub optimal, even though it's remarkable in its intricacy.

The organization continues to collect signatures for a petition that demands an independent investigation with subpoena power of the September 11 attacks, specifically the collapse of the World Trade Center towers and 7 WTC.

So to invoke another metaphor, if you imagine social networks as a kind of vast fabric of humanity I'm connected to you and you to her, on out endlessly into the distance this fabric is actually like an old fashioned American quilt, and it has patches on it happy and unhappy patches.