Some facts about the
Human
Adult weight : 62.035 kg (136.477 lbs)
Maximum longevity : 123 years
Female maturity :4745 days
Male maturity : 5110 days
Gestation : 280 days
Weaning : 639 days
Litter size : 1
Interval between litters : 639 days
Weight at birth : 3.313 kg (7.2886 lbs)
Weight at weaning : 11.75 kg (25.85 lbs)
Mortality rate doubling time : 8 years
Basal metabolic rate : 83 W
Body mass : 70 kg (154 lbs)
Temperature : 36.85 °C (98.33 °F)
Human
Order : Primates
Family : Hominidae
Species : Homo sapiens
Whether you like it or not, this entry is about you. You are a member of the human race (homo sapiens), the scientific name meaning "thinking man". You are a mammal, a primate, and share about 98.4% of the genes with a chimpanzee (did you know that the average human has more hair than the average chimp, they are just less visible?). There are two scientific theories, apart from religious beliefs, of the origins of contemporary humans. The first theory, the "out of Africa" theory, says that modern humans evolved in Africa and migrated to other parts of the world. The second theory, the "multiregional theory" on the other hand, says that modern humans evolved from independent human populations. There also is the "Toba catastrophe theory", which states that an eruption of a vulano took place 70 - 75 thousand years ago which caused a shift in temperature leading to a decrease of population of humans that existed at that time. This caused an acceleration of the differentiation of isolated human species, eventually leading to the end of all the other human species except for the branch that became modern humans. The "out of Africa" theory is the most popular around scientists, which states that humans originated 100 to 200 thousand years ago. The rate at which technology influences our lives is very high, (I could not have told several other humans about our origins 20 years ago, when nobody heared of the "internet"). As for your personal quest to the answers to the questions "where do we come from?" and "what is our goal in life?": good luck and take care :)
1. Homo sapiens -- (the only surviving hominid; species to which modern man belongs; bipedal primate having language and ability to make and use complex tools; brain 1400 cc)
Homo sapiens
(Source WordNet)
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