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Practice Speaking: Re-tell lecture
ID: #33788
Medium Light Pollution
Transcript:
Look at any photo of earth's night sight, and you see the planet lit up like a Christmas decoration. As the glowing lights of bustling cities expand, the serenity of natural darkness wanes. But the repercussions are not just the loss of the starry night sky. Light pollution also affects animals who depend on a nighttime environment to survive. Many bird species use the stars to navigate at night. Baby sea turtles use moonlight reflected off the ocean to guide them back to the water. City lights can confuse them, and fear them off course. Humans are not immune, either. Excessive exposure to artificial light at night can increase the risk of sleep disorders and it's also been linked to obesity, depression, diabetes and even cancer.
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