Carbon nanotubes, those merry nano pranksters, were only fooling. Turns out, the tubes were so salty, they produced false positive results for toxicity. Yes, really. Read about it here and here. So, keep this in mind next time you read a news story with the requisite sentence, gleaned off Google and accepted by the mainstream media as fact, saying, "Tests have shown nanotubes to be toxic in laboratory animals."
Again. Nothing wrong with any of the researchers who made previous mistakes in testing the tubes. This is how science works -- especially a young science like nanotoxicity, where there are no standard procedures for handling new materials like nanotubes.
The science is progressing at its usual pace. It is the agenda groups that are spinning the science fast and furious to conform to convenient conclusions.
Nano World: Nanotube Toxicity Exams Differ (By Charles Q. Choi, UPI)