Snowball Earth: glaciazione globale

Snowball Earth – Historical Geology

How Earth Might Have Turned Into a Snowball - The New York Times

Ancient Climate Events: Snowball Earth

SNOWBALL EARTH

Geology Notes - The Snowball Earth hypothesis proposes that Earth's surface became entirely or nearly entirely frozen at least once, sometime earlier than 650 Mya (million years ago). The snowball Earth episodes

When Earth was a Snowball

Snowball Earth – Historical Geology

Spegnete i condizionatori, arriva l'era glaciale!

Ere glaciali, un nuovo studio sulla luce solare 1 - Ere glaciali, un nuovo studio sulla luce solare