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  2. Gas chamber - Wikipedia

    en.wikipedia.org/wiki/Gas_chamber

    Nitrogen gas or oxygen-depleted air has been considered for human execution, as it can induce nitrogen asphyxiation. The victim detects little abnormal sensation as the oxygen level falls. This leads to asphyxiation (death from lack of oxygen) without the painful and traumatic feeling of suffocation, or the side effects of poisoning. [56]

  3. List of methods of capital punishment - Wikipedia

    en.wikipedia.org/wiki/List_of_methods_of_capital...

    Death Penalty Worldwide: Archived 2013-11-13 at the Wayback Machine Academic research database on the laws, practice, and statistics of capital punishment for every death penalty country in the world. Smile of death: China History Punishment

  4. Reflections on the Guillotine - Wikipedia

    en.wikipedia.org/wiki/Reflections_on_the_Guillotine

    The essay opens with a description of Camus's father's reaction to witnessing the execution of a convicted murderer. At first Camus's father fully supported the decision, but after witnessing the event he was left in a state of shock for several days. Throughout the essay Camus expresses his own shock and disgust at the brutality of the guillotine.

  5. Capital punishment - Wikipedia

    en.wikipedia.org/wiki/Capital_punishment

    The last execution in San Marino had taken place in 1468. In Portugal, after legislative proposals in 1852 and 1863, the death penalty was abolished in 1867. The last execution in Brazil was 1876; from then on all the condemnations were commuted by the Emperor Pedro II until its abolition for civil offences and military offences in peacetime in ...

  6. Alabama calls nitrogen execution method painless and ... - AOL

    www.aol.com/news/alabama-calls-nitrogen...

    The Alabama attorney general's office told federal appeals court judges last week that nitrogen hypoxia is "the most painless and humane method of execution known to man."

  7. Great Oxidation Event - Wikipedia

    en.wikipedia.org/wiki/Great_Oxidation_Event

    Oxygen, O 2, meanwhile, was present in the atmosphere at just 0.001% of its present atmospheric level. [12] [13] The Sun shone at about 70% of its current brightness 4 billion years ago, but there is strong evidence that liquid water existed on Earth at the time. A warm Earth, in spite of a faint Sun, is known as the faint young Sun paradox. [14]

  8. Geological history of oxygen - Wikipedia

    en.wikipedia.org/wiki/Geological_history_of_oxygen

    Photosynthetic prokaryotic organisms that produced O 2 as a byproduct lived long before the first build-up of free oxygen in the atmosphere, [5] perhaps as early as 3.5 billion years ago. The oxygen cyanobacteria produced would have been rapidly removed from the oceans by weathering of reducing minerals, [citation needed] most notably ferrous ...

  9. List of United States Supreme Court opinions involving ...

    en.wikipedia.org/wiki/List_of_United_States...

    Florida, 458 U.S. 782 (1982) – The death penalty is unconstitutional for a person who is a minor participant in a felony and does not kill, attempt to kill, or intend to kill. Tison v. Arizona , 481 U.S. 137 (1987) – Death penalty may be imposed on a felony-murder defendant who was a major participant in the underlying felony and exhibits ...