Brainstorming to prevent nanotech-based terrorism

from the Applied-group-genius dept.
In his weekly column on technology and public policy for Tech Central Station, University of Tennessee law professor and Foresight Director Glenn Reynolds calls 2001 "the year that people started to get serious about the promises and dangers of nanotechnology" ("Preventing Nanoterror Now", 27 December 2001). Reynolds lauds recent efforts to envision ñ and therefore prevent — possible dangers from and misuse of molecular nanotechnology, such as the recent AAAS symposium that included a panel discussion on nanotech dangers that included Eric Drexler, and points to efforts such as the Foresight Guidelines for the safe development of nanotechnology.

But Reynolds goes on to suggest that policy makers need to do much more to develop a broad vision of potential nanotech threats. One possibility: "get together technical experts, leading science fiction writers, experts on terrorism, and some people who have thought about the social impacts of nanotechnology, and have them brainstorm on the kinds of threats that might emerge. From this, we could then move to a consideration of how to prevent those threats from becoming realities. . . . To broaden the idea base, we might also solicit suggestions from the general public", perhaps from web-based forums such as here on Nanodot. "I imagine that such an effort would yield thousands of ideas, from which experts could evaluate the best", says Reynolds. And he concludes:

"Where this powerful technology is concerned, a nanogram of prevention is worth a kilogram of cure. Letís start thinking about nanoterrorism now, while we have the luxury of time. Itís a luxury that wonít last forever."

Quantum dots allow communication with, perhaps control of, brain cells

An article in EE Times ("Scientists activate neurons with quantum dots", by R. Colin Johnson, 6 December 2001) describes research by scientists led by Christine Schmidt, an assistant professor of biomedical engineering at the University of Texas-Austin to use quantum dot devices to selective electrical contacts to neurons. According to the article, by selectively coding peptides that coated quantum dots, University of Texas scientists precisely controlled the spacing of hundreds of quantum dots on the surface of the living neurons. The cadmium sulfide contacts act as photodetectors, allowing researchers to communicate with the cells using precise wavelengths of light.

The research has some . . . interesting implications:

In this new biological application, attaching quantum dots directly to cells eliminates the need for external electrodes. The procedure is entirely non-invasive, similar to the use of fluorescent dyes to mark cells. And since molecular recognition is used, it is a "smart" technology that can pick precisely which capability will be controlled on each neuron to which a quantum dot is attached. Taken to the logical extreme, biologists could remotely control any neural function by activating select neurons.

"Presumably, in the future we will be able to turn on an ion channel or turn off something else," said Schmidt. "We could have highly regulated activity in the neuron. . . . One idea is to put a quantum dot right next to a protein channel ó one that opens and closes ó allowing ions to go in and out, and basically control the ion exchange, which in turn controls action potentials [neuron 'firing']. These are the electrical signals with which the neuron interacts with the brain."

"The Case Against Mars" by Drexler (1984)

An article by K. Eric Drexler that appeared in the October 1984 issue of the L5 News ("Space Development: The Case Against Mars") is now available on the Foresight webiste. The article argues that Mars is not a good target if the goal is development of a broadly-based human expansion into space. At the time, Drexler was Associate Editor of the L5 News and a member of the Society's Board of Advisors, but the article reflected his views rather than L5 Society policy. He now serves on the Board of Governors of the National Space Society, with which the L5 Society merged. Given that humans have made no progress beyond low Earth orbit in the intervening years, the arguments in the article are still valid.

0
    0
    Your Cart
    Your cart is emptyReturn to Shop