particulate matter

Scott D. Rogers

Study Spoiling 4th Of July Fun Says Fireworks Release Harmful Particulates Into The Air

Just in time for the Fourth of July comes some news that might put a damper on your celebrations: A new study says exploding fireworks create toxic air pollution that could be harmful to your health. Happy Independence Day, everyone. [More]

Office Printers Spew As Many Particles As Smoldering Cigarettes

Everyone hates the office printer, including scientists who blame the printers for emitting dangerous amounts of ultra-fine particles. Scientists from Queensland University examined printers from Canon, Hewlett-Packard, Ricoh and Toshiba. Their findings don’t condemn any one brand: the HP LaserJet 4050 emitted no particles, while the the HP LaserJet 1320 and 4250 raised the particle count of the surrounding air tenfold. From the LA Times:

Morawska did not originally set out to study printers. She was invited by the Queensland Department of Public Works to measure air quality inside a six-floor office building near a busy road.