Human evolution is characterized by a number of important physiological trends, including the expansion of the brain cavity and brain itself, which is typically 1,400 cm³ in volume, over twice that of a chimpanzee or gorilla.
Humanbeings are one of only six species to pass the mirror test—which tests whether an animal recognizes its reflection as an image of itself—along with chimpanzees, bonobos, orangutans, dolphins, and possibly pigeons.
Humanism is a philosophy which defines a socio-political doctrine the bounds of which are not constrained by those of locally developed cultures, but which seeks to include all of humanity and all issues common to humanbeings.
Human cloning is the creation of a genetically identical copy of an existing, or previously existing, humanbeing or growing cloned tissue from that individual.
The term is generally used to refer to artificial human cloning; human clones in the form of identical twins are commonplace, with their cloning occurring during the natural process of reproduction.
How to Build a Human, a documentary by BBC and The Discovery Channel, illustrated the prospects by showing an American family that wants to make a clone of their third child, who, although genetically healthy, had serious mental and physical deficiencies due to complications at birth and is expected to die soon.