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  2. Sleep deprivation - Wikipedia

    en.wikipedia.org/wiki/Sleep_deprivation

    Light therapy can improve sleep quality, improve sleep efficiency, and extend sleep duration by helping to establish and consolidate regular sleep-wake cycles. Light therapy is a natural, simple, low-cost treatment that does not lead to residual effects or tolerance. Adverse reactions include headaches, eye fatigue, and even mania. [187]

  3. Here's What Happened After I Tired the Viral "Hurkle-Durkle ...

    www.aol.com/heres-happened-tired-viral-hurkle...

    According to the Dictionary of the Scots Language, a modern compilation of Scots words past and present, hurkle-durkle means “to lie in bed or to lounge after it’s time to get up or go to work.”

  4. Light pollution is getting worse, but there is a movement to ...

    www.aol.com/news/light-pollution-getting-worse...

    Light pollution experts abide by the mantra: “keep it low, keep it shielded, keep it long.” In other words, ensure that lighting is low to the ground, that it is targeted to avoid light ...

  5. Sleep - Wikipedia

    en.wikipedia.org/wiki/Sleep

    In quiet waking, the brain is responsible for 20% of the body's energy use, thus this reduction has a noticeable effect on overall energy consumption. [14] Sleep increases the sensory threshold. In other words, sleeping persons perceive fewer stimuli, but can generally still respond to loud noises and other salient sensory events. [14] [12]

  6. Light pollution - Wikipedia

    en.wikipedia.org/wiki/Light_pollution

    Light pollution is the presence of any unwanted, inappropriate, or excessive artificial lighting. [1] [2] In a descriptive sense, the term light pollution refers to the effects of any poorly implemented lighting sources, during the day or night. Light pollution can be understood not only as a phenomenon resulting from a specific source or kind ...

  7. Light effects on circadian rhythm - Wikipedia

    en.wikipedia.org/wiki/Light_effects_on_circadian...

    These hormones help regulate blood sugar to give the body the appropriate amount of energy that is required throughout the day. Cortisol levels are high upon waking and gradually decrease over the course of the day, melatonin levels are high when the body is entering and exiting a sleeping status and are very low over the course of waking hours ...

  8. Ecological light pollution - Wikipedia

    en.wikipedia.org/wiki/Ecological_light_pollution

    Ecological light pollution [1] is the effect of artificial light on individual organisms and on the structure of ecosystems as a whole.. The effect that artificial light has upon organisms is highly variable, [2] and ranges from beneficial (e.g. increased ability for predator species to observe prey) to immediately fatal (e.g. moths that are attracted to incandescent lanterns and are killed by ...

  9. Electromagnetic radiation - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_radiation

    Quantum effects provide additional sources of EMR, such as the transition of electrons to lower energy levels in an atom and black-body radiation. [9] The energy of an individual photon is quantized and proportional to frequency according to Planck's equation E = hf , where E is the energy per photon, f is the frequency of the photon, and h is ...