Twitter Weekly Updates for 2009-08-23

Math wonks figure out active cloaking — http://bit.ly/Idfj6 #
Brains have built-in crumple zone — http://www.wired.com/wiredscience/2009/08/braincushion/ #
Stimulus in action — driving thru I-5 construction zone, passing semi loaded with crushed clunkers. #