Overlooked rock samples from 640 million years ago record microbes hanging on beneath frozen oceans



Summary

Ancient rock samples from 640 million years ago provide evidence of microbial life persisting under frozen oceans during a period of extreme global glaciation known as “Snowball Earth.” These overlooked samples reveal that life wasn’t completely eradicated by the deep freeze. The microbes likely survived by utilizing nutrients and energy sources available in the subglacial environment, demonstrating the resilience and adaptability of early life forms. This discovery challenges previous assumptions about the severity of Snowball Earth events and offers insights into the potential for life to exist in harsh environments, even on other planets.

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