A dusty atmosphere caused extreme global cooling

In recent Earth history, climate has varied following ~100,000 year, glacial-interglacial cycles with higher and lower temperatures and greenhouse gas concentrations. During the coldest glacial conditions, global mean temperatures ...

GeoCarb—a new view of carbon over the Americas

A new NASA Earth science mission in the early stages of design may achieve a transformational advance in our understanding of the global carbon cycle by mapping concentrations of key carbon gases from a new vantage point: ...

Understanding Earth's geologic history to predict the future

Pratigya Polissar is an organic geochemist at Lamont-Doherty Earth Observatory and a Center for Climate and Life Fellow. Polissar uses molecular fossils—the remnants of plants and animals preserved in ocean, lake, and terrestrial ...

Southern Ocean drives massive bloom of tiny phytoplankton

Scientists have uncovered the ocean conditions that support a massive summertime bloom of algae that spans 16 percent of the global ocean. Known as the Great Calcite Belt, this dense group of a microscopic phytoplankton, ...

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