Video: ‘Green’ Nanotech: An Overview
Tuesday, June 24th, 2008
Pesticides, plastics, and the genetic-modification of plants are our only hope. Each of them, single-handedly, will save the day! Or, so it was once heralded. Unfortunately, we’ve learned that these new technologies do more harm than good—to the environment, to our food, to us. The new mysterious stranger on the block is nanotechnology…or, “Clean, green, and never seen, nanotechnology!” (The part about single-handedly saving the day is understood.)
Nanotechnology is used in everything from USB flash memory to shampoo to plush toys. The Project on Emerging Nanotechnologies claims that over 609 nanotech consumer products exist today, with new ones hitting the market at a pace of 3-4 per week. (They have a great nanotech product directory here.)
If you’re unsure what nanotechnology actually is (like I was), there’s no way to get a good sense of whether or not it is dangerous. As with any new technology, the products that use it find their way into our homes long before the technology’s safety information. As Mark Schapiro pointed out in this interview, we are the guinea pigs. A new technology’s safety information doesn’t come to us, it comes from us.
Here’s a video overview of nanotechnology from KQED, a public television station in northern California. The video does a good job covering nanotechnology in understandable terms, while address both the potential (improved solar panels), and the risks (nanotech cellular attacks).
Carole Bass has written an article for AlterNet about the potential risks of nanotechnology and the early findings with regard to threats to the health of our world.
From the article:
Environmentalists, scientists, and policymakers increasingly worry that nanotech development is outrunning our understanding of how to use it safely. Consider these examples from last month alone:
- An animal study from the United Kingdom found that certain carbon nanotubes can cause the same kind of lung damage as asbestos. Carbon nanotubes are among the most widely used nanomaterials.
- A coalition of consumer groups petitioned the U.S. Environmental Protection Agency to ban the sale of products that contain germ-killing nanosilver particles, from stuffed animals to clothing, arguing that the silver could harm human health, poison aquatic life, and contribute to the rise of antibiotic resistance.
- Researchers in Singapore reported that nanosilver caused severe developmental problems in zebrafish embryos — bolstering worries about what happens when those antimicrobial products, like soap and clothing, leak silver into the waste stream.
- The U.S. Department of Defense, in an internal memo, acknowledged that nanomaterials may “present… risks that are different than those for comparable material at a larger scale.” That’s an overarching risk with nanomaterials: Their tiny size and high surface area make them more chemically reactive and cause them to behave in unpredictable ways. So a substance that’s safe at a normal size can become toxic at the nanoscale.
The US’s attitude when it comes to nanotechnology “shoot first, ask questions later.” We proceed full-throttle with this, and other fully untested technologies, until we begin to see harmful effects coming back to haunt us. This attitude cannot carry into this new world of replicating pollution. When it comes to the genetic modification of plants and nanotech-manipulation of cells, the consequences of a mishap could be catastrophic (See Ice-Nine) and potentially unstoppable due the fact that this new form of pollution cannot be cleaned up and can reproduce itself.
Europe’s approach to these new technologies is to use caution. It seems they’ve learned their lesson in the past.
The European Union, by contrast, is taking a precautionary approach. While U.S. regulators generally presume products to be safe until proven harmful, the EU’s new REACH legislation demands that manufacturers demonstrate the safety of their chemicals. Just last week, the EU released a document concluding that nanorisks “can be dealt with under the current legislative framework,” with some modifications. For example, the document says that under REACH, when companies introduce nanoforms of existing substances, they must provide additional material about “the specific properties, hazards, and risks” of the nanomaterials.
Mark Schapiro writes about the benefits of the European precautionary approach to regulation in his book Exposed: The Toxic Chemistry of Everyday Products and What’s at Stake for American Power.
So what do you think? Are we giving nanotechnology a properly thorough examination? Should there be more regulation? Does it scare you?
[’Bookmark’ this story with Digg if you found it helpful.]

























