ꯁꯤꯟ-ꯁꯥꯔꯣꯜ ꯅꯩꯅꯕ: ꯑꯃꯨꯛꯍꯟꯕꯥ ꯈꯦꯠꯅꯕꯥꯒꯤ ꯃꯔꯛ
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ꯂꯩ ꯏ ৪২:
Hominids started using primitive stone tools millions of years ago. The earliest stone tools were little more than a fractured rock, but approximately 75,000 years ago,<ref>{{Cite news|url=https://www.wired.com/2010/10/stone-tool-sharpening/|title=Stone Agers Sharpened Skills 55,000 Years Earlier Than Thought|last=Bower|first=Bruce|date=October 29, 2010|work=WIRED|access-date=November 7, 2016|via=}}</ref> [[pressure flaking]] provided a way to make much finer work.
====ꯈꯥꯝꯕꯤ-ꯃꯩ
{{main article|Control of fire by early humans}}
The discovery and utilization of [[fire]], a simple [[energy]] source with many profound uses, was a turning point in the technological evolution of humankind.<ref>{{Cite book | last=Crump | first=Thomas | title=A Brief History of Science | year=2001 | publisher=[[Constable & Robinson]] | isbn=184119235X | page=9}}</ref> The exact date of its discovery is not known; evidence of burnt animal bones at the [[Cradle of Humankind]] suggests that the domestication of fire occurred before 1 Ma;<ref>{{Cite web | url=http://whc.unesco.org/pg.cfm?cid=31&id_site=915 | title=Fossil Hominid Sites of Sterkfontein, Swartkrans, Kromdraai, and Environs | accessdate=10 March 2007 | publisher=[[UNESCO]]}}</ref> scholarly consensus indicates that ''[[Homo erectus]]'' had controlled fire by between 500 and 400 ka.<ref>{{Cite web|url=http://www.historyworld.net/wrldhis/PlainTextHistories.asp?historyid=ab10|title=Stone Age Man|last=|first=|date=|website=|publisher=History World|accessdate=13 February 2007}}</ref><ref>{{Cite journal | title=Hominid Use of Fire in the Lower and Middle Pleistocene | last=James | first=Steven R. | journal=[[Current Anthropology]] | volume=30 | issue=1 | pages=1–26 | subscription=yes |date=February 1989 | doi=10.1086/203705 | jstor=2743299}}</ref> Fire, fueled with [[wood]] and [[charcoal]], allowed early humans to cook their food to increase its digestibility, improving its nutrient value and broadening the number of foods that could be eaten.<ref>
*year=1984 * title ==ꯁꯤꯖꯨ ꯌꯦꯡꯉꯨ==
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