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The control of fire enabled important changes in human behavior, health, energy expenditure, and geographic expansion.[15] As a result of “domesticating”[1] fire as previously achieved with plants and animals, humans were able to modify their environments to their own benefit. This ability to manipulate their environments allowed them to move into much colder regions that would have previously been uninhabitable after the loss of body hair[16]. Evidence of more complex management to change biomes can be found as far back as 100,000 to 200,000 years ago at a minimum Furthermore, activity was no longer restricted to daylight hours due to the use of fire. Exposure to artificial light during later hours of the day changed humans’ circadian rhythms, contributing to a longer waking day[2]. The modern human’s waking day is 16 hours, while most mammals are only awake for half as many hours. [3] Additionally, humans are most awake during the early evening hours, while other primates’ days begin at dawn and end at sundown. Many of these behavioral changes can be attributed to the control of fire and its impact on daylight extension.[3]

References

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  1. [1] Bowman, David M J S; Balch, Jennifer; Artaxo, Paulo; Bond, William J; Cochrane, Mark A; D'Antonio, Carla M; DeFries, Ruth; Johnston, Fay H; Keeley, Jon E (2016-11-10). "The human dimension of fire regimes on Earth". Journal of Biogeography38 (12): 2223–2236. doi:10.1111/j.1365-2699.2011.02595.x. ISSN 0305-0270. PMC 3263421. PMID 22279247.
  2. [2] Wiessner, Polly W. (2014-09-30). "Embers of society: Firelight talk among the Ju/'hoansi Bushmen". Proceedings of the National Academy of Sciences111(39): 14027–14035. doi:10.1073/pnas.1404212111. ISSN 0027-8424. PMC 4191796. PMID 25246574.
  3. [3] Gowlett, J. a. J. (2016-06-05). "The discovery of fire by humans: a long and convoluted process". Phil. Trans. R. Soc. B371 (1696): 20150164. doi:10.1098/rstb.2015.0164. ISSN 0962-8436. PMC 4874402. PMID 27216521.
  1. ^ a b Bowman, David M J S; Balch, Jennifer; Artaxo, Paulo; Bond, William J; Cochrane, Mark A; D'Antonio, Carla M; DeFries, Ruth; Johnston, Fay H; Keeley, Jon E (2016-11-10). "The human dimension of fire regimes on Earth". Journal of Biogeography. 38 (12): 2223–2236. doi:10.1111/j.1365-2699.2011.02595.x. ISSN 0305-0270. PMC 3263421. PMID 22279247.
  2. ^ a b Wiessner, Polly W. (2014-09-30). "Embers of society: Firelight talk among the Ju/'hoansi Bushmen". Proceedings of the National Academy of Sciences. 111 (39): 14027–14035. doi:10.1073/pnas.1404212111. ISSN 0027-8424. PMC 4191796. PMID 25246574.
  3. ^ a b c Gowlett, J. a. J. (2016-06-05). "The discovery of fire by humans: a long and convoluted process". Phil. Trans. R. Soc. B. 371 (1696): 20150164. doi:10.1098/rstb.2015.0164. ISSN 0962-8436. PMC 4874402. PMID 27216521.