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  2. Upper Paleolithic - Wikipedia

    en.wikipedia.org/wiki/Upper_Paleolithic

    The Upper Paleolithic (or Upper Palaeolithic) is the third and last subdivision of the Paleolithic or Old Stone Age. Very broadly, it dates to between 50,000 and 12,000 years ago (the beginning of the Holocene ), according to some theories coinciding with the appearance of behavioral modernity in early modern humans, [1] until the advent of the ...

  3. Timeline of prehistory - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_prehistory

    This timeline of prehistory covers the time from the appearance of Homo sapiens approximately 315,000 years ago in Africa to the invention of writing, over 5,000 years ago, with the earliest records going back to 3,200 BC. Prehistory covers the time from the Paleolithic (Old Stone Age) to the beginning of ancient history .

  4. Paleolithic - Wikipedia

    en.wikipedia.org/wiki/Paleolithic

    A skull of early , from the dated to 430,000 BP. The Paleolithic overlaps with the Pleistocene epoch of geologic time. Both ended 12,000 years ago although the Pleistocene started 2.6 million years ago, 700,000 years after the Paleolithic's start. [ 11]

  5. Recent human evolution - Wikipedia

    en.wikipedia.org/wiki/Recent_human_evolution

    Recent human evolution refers to evolutionary adaptation, sexual and natural selection, and genetic drift within Homo sapiens populations, since their separation and dispersal in the Middle Paleolithic about 50,000 years ago. Contrary to popular belief, not only are humans still evolving, their evolution since the dawn of agriculture is faster ...

  6. Green comet zooming our way last visited 50,000 years ago - AOL

    www.aol.com/news/green-comet-zooming-way-last...

    Loaded 0%. CAPE CANAVERAL, Fla. (AP) — A comet is streaking back our way after 50,000 years. The dirty snowball last visited during Neanderthal times, according to NASA. It will come within 26 ...

  7. List of first human settlements - Wikipedia

    en.wikipedia.org/wiki/List_of_first_human...

    List of first human settlements. This is a list of dates associated with the prehistoric peopling of the world (first known presence of Homo sapiens ). The list is divided into four categories, Middle Paleolithic (before 50,000 years ago), Upper Paleolithic (50,000 to 12,500 years ago), Holocene (12,500 to 500 years ago) and Modern ( Age of ...

  8. Confusion surrounds LED light bulb lifetime ratings | TechCrunch

    techcrunch.com/2009/02/11/confusion-surrounds...

    With those, a 25,000 hour-lifetime means that you have 25,000 hours till the bulb is at 70 percent of its original brightness. Seventy percent, research shows, is the point where people say ...

  9. Timeline of human evolution - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_evolution

    The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period . It includes brief explanations of the various taxonomic ranks in ...