The new asbestos?
Carbon nanotubes are tiny man-made fibers with an incredibly high tensile strength. They are one of the most promising nanotechnological developments with many potential applications in electronics, medicine and futuristic materials. However, a new study by a group of scientists from the US and the UK suggests that carbon nanotubes may cause health problems similar to those of asbestos. The problem comes from their similar shapes: both nanotubes and asbestos consist of hard microscopic fibers that can cause significant damage to the lining of the lungs. The study involved exposing mice to nanotubes and found that nanotubes of a certain size caused asbestos-like inflammations and lesions.