The "Polar World" refers to the regions surrounding the Earth's poles, specifically the Arctic in the north and the Antarctic in the south. These areas are characterized by extreme cold, ice-covered landscapes, and unique ecosystems. The Arctic is home to species like polar bears and walruses, while the Antarctic is known for its vast ice sheets and wildlife such as penguins and seals. Both polar regions play a crucial role in regulating the Earth's climate. They reflect sunlight, helping to cool the planet, and their ice stores significant amounts of freshwater. Climate change poses a serious threat to these environments, leading to melting ice and habitat loss for many species.