I guess it isn't known whether carbon nanotubes are toxic:
"These results suggest that carbon nanotubes are potentially toxic to humans and that strict industrial hygiene measures should to be taken to limit exposure during their manipulation." (https://www.sciencedirect.com/science/article/pii/S0041008X0500013X)
Given their interest in security and privacy, I'd say this is a significant fact.
haha "anonymized"
Here's one discussion, FWIW:
https://news.ycombinator.com/item?id=1200206
I guess it isn't known whether carbon nanotubes are toxic: "These results suggest that carbon nanotubes are potentially toxic to humans and that strict industrial hygiene measures should to be taken to limit exposure during their manipulation." (https://www.sciencedirect.com/science/article/pii/S0041008X0500013X)