One of the most extreme climate episodes the Earth has experienced was during the so-called Snowball Earth, 720 million years ago. During this period glaciers spanned from the poles to the tropics, resulting in a planet entirely covered by ice.
One of the most extreme climate episodes the Earth has experienced was during the so-called Snowball Earth, 720 million years ago. During this period glaciers spanned from the poles to the tropics, resulting in a planet entirely covered by ice.