@tlensnap: What if one construction project was so massive that it actually changed the Earth's rotation? China's Three Gorges Dam, one of the largest engineering projects ever built, holds back such an enormous amount of water that it slightly altered the planet's mass distribution. Scientists estimate this slowed Earth's rotation by about 0.06 milliseconds, making each day just a tiny bit longer. The change is far too small for people to notice, but it's a remarkable reminder of the scale of modern engineering. Originally built for flood control, hydroelectric power, and improved river navigation, the dam also became an unexpected example of how human-made structures can have measurable planetary effects. #engineering #Science #technology #megaprojects #futuretech