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  2. Day and Night (M. C. Escher) - Wikipedia

    en.wikipedia.org/wiki/Day_and_Night_(M._C._Escher)

    Along the center, the image is divided into complementary black (right) and white (left), or, as the title suggests, day and night. The birds of the image contradict the overall partition of black and white throughout the image, as the black birds are in the white part of the image, while the white birds are in the black part, each of them ...

  3. Circadian rhythm - Wikipedia

    en.wikipedia.org/wiki/Circadian_rhythm

    A circadian rhythm (/ s ər ˈ k eɪ d i ə n /), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours.Circadian rhythms can refer to any process that originates within an organism (i.e., endogenous) and responds to the environment (is entrained by the environment).

  4. Circadian clock - Wikipedia

    en.wikipedia.org/wiki/Circadian_clock

    In vertebrates, the master circadian clock is contained within the suprachiasmatic nucleus (SCN), a bilateral nerve cluster of about 20,000 neurons. [10] [11] The SCN itself is located in the hypothalamus, a small region of the brain situated directly above the optic chiasm, where it receives input from specialized photosensitive ganglion cells in the retina via the retinohypothalamic tract.

  5. Entrainment (chronobiology) - Wikipedia

    en.wikipedia.org/wiki/Entrainment_(chronobiology)

    The activity/rest cycle (sleep) in animals is one of the circadian rhythms that normally are entrained by environmental cues. In mammals, such endogenous rhythms are generated by the suprachiasmatic nucleus (SCN) of the anterior hypothalamus. Entrainment is accomplished by altering the concentration of clock components through altered gene ...

  6. Celebrate Earth Day with These Fun Activities for Kids and Adults

    www.aol.com/lifestyle/celebrate-earth-day-fun...

    Make art. Head outside with the kids and gather natural items from your yard or the local park, like flowers, twigs, pebbles, bark, leaves, feathers, pine cones, and shells.

  7. Light effects on circadian rhythm - Wikipedia

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

    [6] [4] A shift in the circadian phase response curve creates a connection between the amount of light in a day (day length) and depressive symptoms in this disorder. [6] [4] Light seems to have therapeutic antidepressant effects when an organism is exposed to it at appropriate times during the circadian rhythm, regulating the sleep-wake cycle ...

  8. Shawarma restaurant ad goes so viral, customers are driving ...

    www.aol.com/shawarma-restaurant-ad-goes-viral...

    The clip is only 20-seconds long, but it’s had a huge impact, garnering 3.2 million views and thousands of supportive comments. ... “Google says I’m a 1 day and 3 hour drive from here. Seems ...

  9. The Best Plants To Overwinter, According To An Expert - AOL

    www.aol.com/lifestyle/best-plants-overwinter...

    Here’s what garden and patio plants you can save for next spring. As the temperatures start to drop and sweater weather arrives, you may start to look sadly at your beautiful, lush garden plants.