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  2. Control of fire by early humans - Wikipedia

    en.wikipedia.org/wiki/Control_of_fire_by_early...

    Fire was an important factor in expanding and developing societies of early hominids. One impact fire might have had was social stratification. The power to make and wield fire may have conferred prestige and social position. [35] Fire also led to a lengthening of daytime activities, and allowed more nighttime activities. [45]

  3. Fire history - Wikipedia

    en.wikipedia.org/wiki/Fire_history

    This method can be used to date the year a fire occurred. Observing the scars establishes the timeline of a forest fire and the time between fires at a site. Surveying many trees over a large sample area provides a view to individual fire events and the overall fire regime. Not all tree species scar and show evidence of fire.

  4. Timeline of scientific discoveries - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_scientific...

    The timeline begins at the Bronze Age, as it is difficult to give even estimates for the timing of events prior to this, such as of the discovery of counting, natural numbers and arithmetic. To avoid overlap with timeline of historic inventions , the timeline does not list examples of documentation for manufactured substances and devices unless ...

  5. Phlogiston theory - Wikipedia

    en.wikipedia.org/wiki/Phlogiston_theory

    The phlogiston theory, a superseded scientific theory, postulated the existence of a fire-like element dubbed phlogiston (/ f l ɒ ˈ dʒ ɪ s t ən, f l oʊ-,-ɒ n /) [1] [2] contained within combustible bodies and released during combustion. The name comes from the Ancient Greek φλογιστόν phlogistón (burning up), from φλόξ ...

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  7. Timeline of natural history - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_natural_history

    The Ca-Al-rich inclusions, which formed 2 million years before the chondrules, [1] are a key signature of a supernova explosion. c. 4,567 ±3 Ma – Rapid collapse of hydrogen molecular cloud , forming a third-generation Population I star , the Sun , in a region of the Galactic Habitable Zone (GHZ), about 25,000 light years from the center of ...

  8. Today's Wordle Hint, Answer for #1273 on Friday ... - AOL

    www.aol.com/todays-wordle-hint-answer-1273...

    SPOILERS BELOW—do not scroll any further if you don't want the answer revealed. The New York Times. Today's Wordle Answer for #1273 on Friday, December 13, 2024.

  9. Timeline of events related to per- and polyfluoroalkyl ...

    en.wikipedia.org/wiki/Timeline_of_events_related...

    [35] According to Robert Avsec, who was Fire Chief of the Chesterfield, Virginia, Fire and EMS Department for 26 years, in fires classified as Class B—which includes fires that are difficult to extinguish, such as "fires that involve petroleum or other flammable liquids"—firefighters use a classification of firefighting foam called Aqueous ...

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