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.

Bitcoin trades around $87k–$88k, down roughly 0.3% over 24 hours and about 3% over the last week. The intraday band sits near $86,800–$90,200, with 24-hour turnover around $45–49 billion and a monthly ...