How a Global Freeze 445 Million Years Ago Changed Life Forever
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How a Global Freeze 445 Million Years Ago Changed Life Forever

One of Earth’s earliest mass extinctions wiped out most ocean life during a sudden global ice age. From the ruins, jawed vertebrates survived, diversified, and transformed the course of evolution. About 445 million years ago, Earth experienced a sudden and dramatic shift that altered the course of life. In a very short span of geological [...]