- New method smashes record for longest carbon nanotube forests ever made. Researchers in Japan have grown “forests” of carbon nanotubes (CNTs) longer than ever before. The team grew bunches of nanotubes up to 14 cm long, which should help make it easier to scale production of this versatile material. https://newatlas.com/materials/longest-carbon-nanotube-forests-record/ 4 comments science