In relation to fossil fuels and global warming, as the planet heats up, the oceans expand due to the melting of polar ice sheets. (earthday.org)
This figure shows that there was a slow cooling of climate over the last 3 million years as polar ice sheets grew partly in response to continental drift. (metlink.org)
Much of the world's water is stored in glaciers and the great polar ice sheets. (scientificamerican.com)