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Changes in Earth’s orbit enabled the emergence of complex life

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'Snowball Earth' is the most extreme climate event in Earth's history, when it was completely engulfed in ice. The theory of its existence has...

Comet Catalina suggests comets delivered carbon to rocky planets

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Comets delivered carbon to rocky planets, and an icy visitor from the edge of our solar system hurtled past Earth in early 2016 to...