The Hague (NL)[visual art]
@ GREENHOUSE (<>TAGLAB) ......... FRIDAY, SATURDAY - CONTINUOUShttp://www.bitlek.nl/ 
Tjerk Stoop (1977) is a musician and installation artist. He uses sound, image and data as materials for electro-acoustic compositions, experimental short films and interactive installations. Statlab #2 takes the local environment as its source material, sampling air direct and in real time from the Spuiplein-area. It displays the daily average concentration of CO2 through a chemical reaction in which chalk particles are formed. The result is an analogue graph in which the difference in the amount of chalk particles per tank is a ways to measure the fluctuating concentration of CO2 in one week.