China's Pollution Sniffers: Author's Note
There has always been one aspect of the pollution sniffers in Guangdong province that I've never been able to get to the bottom of -- why use humans? I wondered about it when I wrote the article, as well as when I created a "Stuff You Should Know" podcast episode on it, and I wonder about it still now. All of the attendant damage that comes with purposefully exposing humans to air pollution -- and not only that, but getting them to take long deep breaths of it as their jobs -- seems at least dangerous if not totally unnecessary. In the fourth section, I chronicled a number of mechanical sensors that could do just as well and actually much better than human pollution detectors. So, why use people?
This was my first article for HowStuffWorks.com. It was a test article, actually, the one that got me hired, so I have a real affinity for this one. Researching for it also provided my first introduction to the fascinating fact that science doesn't know how we experience the sensation of smell. Getting acquainted with the theories of smell that I talk about in this article also exposed me to how much we have left to learn.
- "China's 'professional noses' sniff out polluters." Reuters. Reuters.com. June 20, 2007.
- "Electronic Nose: NASA researchers are developing an exquisitely sensitive artificial nose for space exploration." NASA. Science.nasa.gov. October 6, 2004.
- "How your brain helps you become a wine expert: Researchers discover how we differentiate smells." Northwestern University. December 21, 2006.
- "Human noses to sniff out China's pollutants." AFP. Breitbart.com. June 20, 2007.
- "Human sniffer team tracks pollution (China)." The Times Online U.K. Freerepublic.com. June 21, 2007.
- "Invisible enemy spurs health worries: Asia confronts growing problem of ultrafine particles." CNN. CNN.com. June 2, 2006.
- "Learning to smell the roses: Experience-Dependent Neural Plasticity in Human Piriform and Orbitofrontal Cortices." Neuron. Straddle3.net. December 29, 2006.
- Neurophilosophy.wordpress.com. December 12, 2006,
- "Olfactory nerve." Medterms.com
- "Quantum mechanics may explain how humans smell." Physorg.com. February 1, 2007.
- "Robot project could take big bite out of pollution." The Arizona Republic. azcentral.com. December 11, 2005.
- "Sniffing out harmful gases." China Daily. China.org.cn. June 20, 2007.
- "The most polluted places on Earth: How repot ranks areas of the planet as polluters and polluted." CBS News. CBSNews.com. June 6, 2007.