![A Perfect Storm of Fire and Ice May Have Led to Snowball Earth | Harvard University Center for the Environment A Perfect Storm of Fire and Ice May Have Led to Snowball Earth | Harvard University Center for the Environment](https://environment.harvard.edu/sites/hwpi.harvard.edu/files/snowballearth1.png?m=1610458506)
A Perfect Storm of Fire and Ice May Have Led to Snowball Earth | Harvard University Center for the Environment
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
![Snowball Earth - (Yuhiro Tsujitsugu) - Science-fiction [TERRES DE LEGENDES, une librairie du réseau Canal BD] Snowball Earth - (Yuhiro Tsujitsugu) - Science-fiction [TERRES DE LEGENDES, une librairie du réseau Canal BD]](https://www.canalbd.net/img/couvpage/09/9791039121095_pg.jpg)