It's one of the most important materials in the sun, in part because of its role in controlling the sun's heat. (sciencenewsforstudents.org)
The real crisis will come when we see substantial amounts of important material published only as ebooks, when ebook - only publications become a significant component of the cultural and intellectual record. (americanlibrariesmagazine.org)
Some other important materials used for the process are stored in the muscle tissues. (yorkiemag.com)