Ah! I found -- not just one or two -- but three links!
First, here is a news story (in Physics and Astronomy online) that starts with this creepy stuff:
Working with platinum nanowires 100 times thinner than a human hair--and using blood vessels as conduits to guide the wires--a team of U.S. and Japanese researchers has demonstrated a technique that may one day allow doctors to monitor individual brain cells ...
which, thankfully, is followed immediately by "... [it may] perhaps provide new treatments for neurological diseases such as Parkinson's".
Next, we have (via Slashdot) a link to the course website on Nanotechnology and Society. This site has tons of information, and some nice links. It even has a nanojokes page, but there is no dirty joke there (yet) ...
Finally, in his excellent blog, Indic View, Kiran has a nice post on a nanotech-based photovoltaic future.
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