(October 2014) Leukonychia (or leuconychia), also known as white nails or milk spots, is a medical term for white discoloration appearing on nails. It is derived from the Greek words leuko (white) and nychia (nails). The most common cause is injury to the base of the nail (the matrix) where the nail is formed.
There is generally little depth to the content of these articles. Articles are written by staff members or freelance writers. The main purpose of popular periodicals is to entertain the reader, sell products (their own or their advertisers'), and/or promote a viewpoint.
What is the main purpose of science? The main purpose of science is to expand the human knowledge. Science is all about logic and rational as compared to religion which is mostly based on belief, and where logic and rationality play smaller roles.