The deliberate and conscious wearing of clothing is a behavioural adaptation , which among all known extant and extinct animals is a uniquely human characteristic arising from functional needs such as protection from the elements. Protection from the elements includes the sun for depigmented human populations and cold temperatures after the loss of body hair and the migration of humans to colder regions  around , years ago in which they had not evolved and thus lacked the necessary physical adaptations. According to some researchers, wearing clothes may predate early human global migrations by an additional 70, years. In this case, the migrations were themselves facilitated by the innovation of clothing. At most, as in the case of Homo neanderthalensis, they are believed to have worn only capes, if any coverings at all.