December 1, 2008
Navigating the minefield of airborne nanoparticle exposure
Nanotechnology—like other emerging technologies—presents a dilemma: If you’re making new substances with uncertain health risks, how low is low enough when it comes to managing exposure?
The issue is raised in the current edition of Nature Nanotechnology by Vladimir Murashov of the National Institute for Occupational Safety and Health (NIOSH), and former NIOSH-director John Howard. But the question has been bubbling along for some time.
And it’s an important one. Uncertainty over safe workplace practices is bad news for nanotech businesses trying to do the right thing—especially small start-ups that don’t have the resources to work out their own bespoke solutions. It’s not much better for regulators—as the gap between emerging technologies and solid information on their safe use widens, how do you craft new approaches to protecting people’s health and the environment? Read the rest of this entry »
September 9, 2008
The blogging community is no stranger to the use (and possible abuse) of nanometre-scale silver—products ranging from silver-enhanced socks and toothpaste to plush toys and cure-alls have all appeared in the spotlight recently. With each passing month, the number of nano-silver gizmos on the market is growing.
Back in March 2006 when the Project on Emerging Nanotechnologies Consumer Products Inventory was launched, there were 25 products claiming to use nanoscale silver. In contrast, the August 2008 update of the inventory brought the number of nano-silver containing products to 235—an increase of nearly ten times over two and a half years!
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June 21, 2008
Painted metal roofs are cheap, convenient, and usually very durable. But over the past two years, a rash of accelerated ageing has blighted pre-painted steel roofing in Australia. And intriguingly the ageing—which affects the coating—seems to be localized to small patches, taking on the form of fingerprints, handprints and even footprints.
The culprit it seems is sunscreen that is spilt or otherwise transferred to the roofing by construction workers during installation. And not any old sunscreen—this would appear to be a uniquely nano phenomenon. But I get ahead of myself… Read the rest of this entry »
April 18, 2008
The most recent estimate from the U.S. National Nanotechnology Initiative (NNI) puts nanotechnology risk research investment at $68 million for 2006 (the only year complete figures are currently available for—apparently). Yet theProject on Emerging Nanotechnologies (PEN) has just completed its own assessment—and could only find $13 million associated with research projects primarily focused on addressing nanotechnology risk in the same year. What gives—are the feds indulging in a bit of creative accounting; or have PEN forgotten the basic rules of arithmetic?
Let’s be honest, I’m not a great fan of bean-counting. Evaluating research in terms of dollars invested (or Pounds or Euros) is a crude tool at the best of times. But when it comes to assessing investments and returns, the fact is that bottom-line figures count. Read the rest of this entry »
December 8, 2007
A trip through the newly refurbished St. Pancras station in London this week, and home to the widely-proclaimed “longest champagne bar in Europe”, prompted the following thought: At the champagne bar of modern science, are risk researchers the cappuccino drinkers tucked away in the corner? Read the rest of this entry »
November 4, 2007
I have on my desk a plastic bag of carbon nanotubes—2 grams of dry, 60% purity single walled carbon nanotubes to be precise—bought from Cheap Tubes Inc. for the princely sum of $80. And I am wondering what to do with them. Read the rest of this entry »