Author: Chloe Griffin, Research Fellow, School of Ocean & Earth Science, University of Southampton, University of Southampton

Pablo Carlos Budassi, CC BY-NC-SA To an astronaut today, the Earth looks like a vibrant blue marble from space. But 700 million years ago, it would have looked like a blinding white snowball. This seems an unlikely cradle for life, yet new evidence suggests the frozen ocean featured restricted ice-free oases that provided a lifeline […]