Image via: HeHe The artists Helen Evans and Heike Hanson, who work together under the alias HeHe, give new meaning to the term "chemical sensitivity" by lighting up the smoke trailing from a tall smokestack which looms over the city of Helsinki. The plume which is normally cloaked in the darkness becomes lit for all to see. And ponder. The most curious aspect of the project may be its location: what does the fact that two French artists are working in the capital of Finland reveal about the attitude of the power plant managers? Because this project achiev...