Further evidence for ‘snowball Earth’
Ian Randall | 5 March 2010
![]() |
Sea ice reached as far as the equator during the Sturtian glaciation, 716.5 million years ago, geologists have determined. |
Ian Randall | 5 March 2010
![]() |
Sea ice reached as far as the equator during the Sturtian glaciation, 716.5 million years ago, geologists have determined. |