Green Tomorrow

Such were the findings from research recently undertaking at the Queensland University of Technology in Australia. The researchers went to a six-storey office building in the states capital, Brisbane, planning to test its ventilation system. In the process they tested the buildings laser printers. About a third of the machines were considered to be high emitters of ultra fine particles, with 2 medium, 4 low and 23 were non emitters. (see complete list of models in the SF Chronicle article) The emissions they discovered both in the office and later in lab tests reveal the particles were fine enough to infiltrate the lungs, causing damage equal to