Most evenings the CN tower is now on decreased lighting until October 30th as they participate in the FLAP program. However on Saturday night I noticed from the radom up they were testing red, green and blue colours, from the radom down there were fixed lights of varying heights. I pretty much dismissed it thinking that they were programming & testing code for a new Christmas theme. As it turns out, from the radom down was actually barcode in celebration of a new project to barcode the genetic code for every species on earth, so they displayed the barcode of the DNA for the Canadian Beaver as a large contingent of international scientists are in town who are working on the project.
I thought it was kind of cool, you can read more
here.