Re:Injecting into my bloodstream? (Score 2, Interesting)

I'm not worried about having magnetic substances injected into my bloodstream - I get enough EM radiation from my PC's monitor, not to mention sunlight. What I'm curious about is the article's discussion of heating the molecules once they're inside my body. I know one of the researchers mentioned that this carbon nanofoam is a piss-poor conductor of heat, but I'm still a bit wary of that.

Also, it's been a few years since high-school chemistry - why would this nanofoam lose its magnetic properties after a few hours, rather than immediately upon cooldown? That just strikes me as weird. (Fascinating and cool, but weird.)