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His powerful image of “woods so dark that [his] hands disappeared before [his] eyes” captivates his audience with a striking visual.Also, Bogard’s use of the statistic of “8 of 10 children…
And too little darkness, meaning too much artificial light at night, spells trouble for all.3 Already the World Health Organization classifies working the night shift as a probable human carcinogen, and the American Medical Association has voiced its unanimous support for “light pollution reduction efforts and glare reduction efforts at both the national and state levels.” Our bodies need darkness to produce the hormone melatonin, which keeps certain cancers from developing, and our bodies need darkness for sleep.
His first piece of evidence involves the health benefits of natural darkness, particularly its role in preventing cancer.
After beginning his point by including the support of two highly reputable health organizations, the WHO and AMA, to provide a sense of validity to his argument, Bogard highlights the benefits of darkness and a good night’s sleep.
But now, when 8 of 10 children born in the United States will never know a sky dark enough for the Milky Way, I worry we are rapidly losing night’s natural darkness before realizing its worth.
This winter solstice, as we cheer the days’ gradual movement back toward light, let us also remember the irreplaceable value of darkness.2 All life evolved to the steady rhythm of bright days and dark nights.