Saturday, March 17, 2012

Dyeing the Chicago River Green

2 comments:

  1. In case you're wondering (and I know I was), the dye used is a derivative of fluorescein and is the same stuff they put in green anti-freeze to check for leaks and to distinguish it from over fluids.

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  2. OT: I read this once but I guess I forgot it. A most uncanny coincidence: link

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