Tectonics in the tropics trigger Earth's ice ages, study finds

Over the last 540 million years, the Earth has weathered three major ice ages—periods during which global temperatures plummeted, producing extensive ice sheets and glaciers that have stretched beyond the polar caps.

How marine snow cools the planet

University of Sydney scientists have modelled how carbonate accumulation from 'marine snow' in oceans has absorbed carbon dioxide over millennia and been a key driver in keeping the planet cool for millions of years.

Can we tweak marine chemistry to help stave off climate change?

The world's nations are nowhere near to meeting the global Paris Agreement's goals on climate change of holding global temperature increases to 2 degrees Celsius compared to 19th-century averages, much less its more aspirational ...

Rain is important for how carbon dioxide affects grasslands

Vegetation biomass on grasslands increases in response to elevated carbon dioxide levels, but less than expected. Vegetation on grasslands with a wet spring season has the greatest increase. This has been demonstrated in ...

Complex life might require a very narrow habitable zone

Since the Kepler Space Telescope was launched into space, the number of known planets beyond the solar system (exoplanets) has grown exponentially. At present, 3,917 planets have been confirmed in 2,918 star systems, while ...

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