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en.wikipedia.org/wiki/Human

Modern humans are the only extant members of the subtribe Hominina, a branch of the tribe ... They began to exhibit evidence of behavioral modernity around 50,000 .... The earliest fossils that have been proposed as members of the hominin .... early humans and these sister species has been a long-standing source of ...

www.universetoday.com/38125/how-long-have-humans-been-on-earth

Jan 19, 2015 ... While our ancestors have been around for about six million years, the modern form of humans only evolved about 200,000 years ago.

www.pbs.org/wgbh/evolution/library/faq/cat06.html

Because for many species, humans included, evolution happens over the course of many thousands ... A battle against bacteria that we have been winning with medicine for the last 50 years or so is now ... How long has life existed on Earth?

www.galaxymonitor.com/long-humans-earth

Jun 27, 2017 ... The history of earth and life as we know it is a complex account of the process of ... to the length of time humans have been roaming the earth.

www.ask.com/youtube?q=How+Long+Have+Humans+Been+on+Earth%3F&v=Ve969_F71KI
Jan 15, 2015 ... Within the history of everything we know from the Big Bang to this moment, where do humans fit in? Click here to see more videos: ...

www.npr.org/sections/13.7/2012/09/11/160934187/for-how-long-have-we-been-human

Sep 13, 2012 ... Around 12,000: Onset of agriculture and human settlements. ... know how the paints were used: no painted walls or objects have been found.

www.bbc.com/earth/story/20150929-why-are-we-the-only-human-species-still-alive

Sep 29, 2015 ... Once Earth was home to a host of human species, from ... Remains of the 'hobbit' (left) have only been discovered on one island (Credit: ... Neanderthals evolved long before us, and lived in Europe well before we arrived.

www.sciencealert.com/complex-life-could-have-existed-on-earth-at-least-once-before

Jan 18, 2017 ... Complex life might have come and gone on Earth long before the multicellular organisms we're familiar with today arose, a new study suggests ...

www.quora.com/How-long-have-modern-humans-been-on-Earth

Cro-Magnon man in many case was considered modern man and fossils found date back 45,000 years, but it was estimated that Cro-Magnon go back as far as ...