Summary:
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Dam construction in China slows Earth’s rotation, confirmed by NASA, altering planet’s physical properties. Human engineering at work.
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Three Gorges Dam shifts Earth’s rotation, produces massive electricity, while plans for larger dam raise concerns about planetary changes.
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Scientists warn of Earth’s rotation impacts from human activities, including dam construction, earthquakes, and ice melt, affecting timekeeping.
It is almost like a science fiction film. Nevertheless, the NASA scientists have officially approved that it is entirely real. The largest hydropower construction in China, the Three Gorges Dam, is slowing down the rotation of the Earth. This may not be very dramatic, but it can be measured. This finding is a transformative idea of human engineering.
Dam Defies Imagination

The Three Gorges Dam, covering a mile across the Yangtze River and standing 185 meters high, is in China. The construction of the golf course was so expensive that it required 40,000 workers and took 17 years to complete, for 37 billion dollars.
NASA Officially Joins

NASA stated that the Three Gorges Dam has reduced the rotation of the Earth by half a millionth of a second in twenty-four hours and has permanently moved the rotational axis of the Earth by an average of two centimeters.
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Water Weight Wins

The reservoir of the dam has about 40 billion cubic meters of water – equal to sixteen million Olympic swimming pools. The physical effect of concentrating such an enormous weight in a single place is that the rotation of our planet every day will be altered.
Skater Science Explains

NASA likens this phenomenon to a skater stretching his or her arms in the process of spinning. Mass removed of the axis of rotation of the earth increases the moment of Inertia and decreases the planet’s rotation of the planet.
Physics Gets Personal

NASA geophysicist Dr. Benjamin Fong Chao gave one of the simplest explanations when he wrote that every time you move around mass, it changes the rotation of the Earth. This dam shifts a sufficiently huge bulk of mass as to cause truly quantifiable planetary effects that no one had ever thought were possible.
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Power Beyond Electricity

The Three Gorges Dam decelerates the rotation of the earth and produces more than 80 billion kilowatt-hours of electricity power every year, which is equivalent to fifteen nuclear reactions, making it the most potent structure to produce electricity.
Earth Already Shifting

This is not isolated, as scientists confirm. The rotation of the Earth is already strained by the melting polar ice, huge earthquakes, and groundwater extraction. In the period of 1993 to 2010 alone, groundwater extraction made a dramatic shift of the rotational pole of Earth by approximately 80 centimeters to the east.
Timekeeping Gets Tricky

These minute secular movements have practical implications for world timekeeping. Scientists do at times include leap seconds on the atomic clocks with a specific reason of compensating for the slowly varying speed of rotation of the Earth due to the growing human-built engineering activities on the Earth’s surface.
Bigger Dam Coming

China has proposed a bigger dam across the Yarlung Tsangpo River, which can produce 300billion kilowatt-hours/year of power. Its effect on the speed of rotation of the Earth is being measured by scientists.
Humans Shape Planets

The ability of NASA to confirm this means that we are already on a planetary engineering scale, and our choices about infrastructure are permanently changing the fundamental physical characteristics of the planet.
