Related topics: climate change

Earth's history sends climate warning

A new study of historical carbon dioxide levels stresses urgent action is needed to avoid prehistoric levels of climate change.

Greenland's ice melted away at least once in last million years

The ice sheet atop Greenland —which holds enough frozen water to swamp coastal cities worldwide—has melted to the ground at least once in the last million years despite CO2 levels far lower than today, stunned scientists ...

What caused the ice ages? Tiny ocean fossils offer key evidence

The last million years of Earth history have been characterized by frequent "glacial-interglacial cycles," large swings in climate that are linked to the growing and shrinking of massive, continent-spanning ice sheets. These ...

Coral time machines reveal ancient carbon dioxide burps

The fossilized remains of ancient deep-sea corals may act as time machines providing new insights into the effect the ocean has on rising CO2 levels, according to research carried out by the Universities of St Andrews, Bristol ...

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