What’s a knol?
According to Google a knol equals a “unit of knowledge”. Several days ago Google announced its new project to launch a knowledge aggregation site (think Wikipedia) to consist of knols created by anyone and everyone. In beta this project still lacks an official name.
Unlike the general web where it’s often hard to find the listed author, a knol project entry will place more prominence on authors. Not all knols will be of high quality but Google through its ranking technology can be counted on to sift the best to the top. They offer this example of a knol. You can read more in the Official Google Blog.