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When ice crystals form in clouds, the surrounding air
Curt Richter
An American psychologist known for his work in biological rhythms and the study of homeostasis in animals.
Suprachiasmatic Nucleus
A tiny region of the brain in the hypothalamus responsible for controlling circadian rhythms.
Master Clock
Refers to the body's internal time-keeping system, located in the brain, that regulates circadian rhythms and sleep-wake cycles.
Pineal Gland
A small endocrine gland in the brain involved in the production of melatonin, a hormone that regulates sleep patterns.
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