Terra Planet Earth on MSN
The day Earth almost lost its magnetic field: What kept the shield alive
Earth’s magnetic field nearly collapsed long ago. What saved it explains why life survived and why the planet remains ...
Evidence from fossil shells suggests that falling seawater calcium helped lock away carbon dioxide and helped cool Earth after the dinosaurs.
Research suggests that Mars may strongly influence these cycles. For example, Mars helps drive a 2.4‑million‑year cycle ...
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