Polar Ice refers to the large sheets of ice that cover the polar regions, specifically the Arctic and Antarctica. This type of ice is formed from snowfall that accumulates over thousands of years and becomes compacted into a thick layer of ice. Polar ice plays an important role in regulating Earth's climate by reflecting sunlight back into space, which helps to keep our planet cooler. However, due to global warming, the polar ice is melting at an alarming rate, leading to rising sea levels and other environmental consequences.