Polar ice caps are large masses of ice found at the North and South Poles of the Earth. These ice caps play a crucial role in regulating global climate and sea levels, as they reflect sunlight back into space and help maintain Earth's temperature. However, in recent years, polar ice caps have been melting at an alarming rate due to climate change, leading to rising sea levels and other environmental consequences. Scientists study polar ice caps to better understand the impacts of climate change and develop strategies for mitigating its effects.