Did you know that the Earth's mantle, located between the crust and core, is composed of solid rock that can flow like a liquid over long periods of time? This slow movement is known as mantle convection, which plays a key role in many geological processes such as plate tectonics. Speaking of plate tectonics, did you know that the Earth's lithosphere is divided into several large and small plates that float on the semi-fluid asthenosphere below? These plates constantly move and interact with each other, leading to phenomena like earthquakes, volcanic eruptions, and mountain formations. Another fascinating geological fact is that the planet has undergone several ice ages throughout its history, with the most recent one occurring during the Pleistocene epoch about 2.6 million years ago. During these ice ages, large portions of the Earth's surface were covered in ice sheets, drastically altering the landscape and climate. One more intriguing geological tidbit is that the Grand Canyon in Arizona, USA, is not only a breathtaking natural wonder but also a testament to the power of erosion. The canyon was carved by the Colorado River over millions of years, exposing nearly 2 billion years of Earth's geological history in its layers of rock. These facts highlight the dynamic and ever-changing nature of our planet's geology, showcasing the powerful forces at work beneath the surface that shape the world we live in.