Human

Humans -- scientific name Homo Sapiens -- are a species of sapient lifeform native to Earth. Humans are bilaterally symetric carbon based bipeds with four appendages (two for locomotion, two for manipulation) supported by an internal skeleton. Their bodies are covered by a mostly smooth, elastic skin with a few light hairs covering much of their body, concentrated in large crests on their head. Humans are descended from arboreal omnivores which left the trees to live on the grasslands of Africa. An average human stands between 1.6 and 2 meters tall and masses between 40 and 80 kilograms. Humans' most important adaptation is their capacity to think and use tools; this has given them the ability to do great things and unleash death and terror upon the world like no other species.