When Earth iced over, early life may have sheltered in meltwater ponds
When the Earth froze over, where did life shelter? MIT scientists say one refuge may have been pools of melted ice that dotted the planet’s icy surface.
In a study appearing in Nature Communications, the researchers report that 635 million to 720 million years ago, during periods known as “Snowball Earth,” when much of the planet was covered in ice, some of our ancient cellular ancestors could have waited things out in meltwater ponds.
The scientists found that eukaryotes — complex cellular lifeforms ...