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Science News by AGU

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paleoclimatology & paleoceanography

A partially frozen planet sits on a black background.
Posted inFeatures

The Young Earth Under the Cool Sun

by Kimberly M. S. Cartier 22 February 202223 February 2022

How did our planet avoid being frozen solid during the early days of our solar system?

Yatteyattah Nature Reserve in Australia
Posted inNews

A New Model for an Old Extinction Event

by Robin Donovan 8 February 20228 February 2022

A 3D Earth system model incorporates variables such as temperature and sulfurization to shed light on the end-Permian extinction event.

Illustration of the surface of early Earth with an orange sky (with a meteorite streaking through it), a green ocean, a large island landmass, an impact crater, and underwater volcanoes.
Posted inScience Updates

Rethinking the Search for the Origins of Life

by Dustin Trail, Jamie Elsila, Ulrich F. Müller, Timothy Lyons and Karyn L. Rogers 4 February 20224 May 2022

Early Earth conditions and the chemistry that led to life were inextricably interwoven. Earth scientists and prebiotic chemists are working together in new ways to understand how life first emerged.

Gyldenlove Glacier discharges into a fjord in southern Greenland.
Posted inNews

“Sticky” Ice Sheets May Have Led to More Intense Glacial Cycles

by Clara Chaisson 5 January 202211 May 2022

New research attributes a shift to longer, stronger glacial cycles to increased friction between ice sheets and bedrock in the Northern Hemisphere 1 million years ago.

A small flock of sheep graze by the water’s edge in the Faroe Islands.
Posted inNews

Ancient Eruptions Reveal Earliest Settlers on the Faroe Islands

by Freda Kreier 16 December 202120 December 2021

Lake sediment is helping scientists resolve a decades-long historical mystery.

A school of silver marine fish in the Maldives
Posted inNews

Ancient Fish Thrived During a Period of Rapid Global Warming

by Elyse DeFranco 14 December 202114 December 2021

Teeth and scales preserved in marine sediments suggest that fish thrived during one of Earth’s fastest-warming periods.

Aerial or satellite image of ancient riverbeds.
Posted inNews

The “Green Sahara” Left Behind Fossil Rivers

by Munyaradzi Makoni 10 December 202121 March 2022

Reconstruction reveals how people living along the banks of the Nile may have relocated as climate changed and flooding increased during the African Humid Period.

A person clipping mangrove leaves
Posted inNews

Inland Mangroves Are Relics of the Past’s Higher Sea Levels

by Katherine Kornei 10 November 202110 November 2021

Mangroves found in southern Mexico’s rain forest, 170 kilometers from the nearest ocean, date to a time when sea levels were several meters higher.

Posted inNews

Greener, Wetter Arabia Was a Crossroads of Early Human Migration

by J. Besl 7 October 202126 April 2022

Hand axes, hippo bones, and a stack of ancient lake beds show that arid Arabia experienced intervals of humid weather, spurring pulses of human migration over the past 400,000 years.

Image showing water above and below the ocean surface
Posted inScience Updates

Navigating Miocene Ocean Temperatures for Insights into the Future

by Kira T. Lawrence, Helen K. Coxall, Sindia Sosdian and Margret Steinthorsdottir 5 October 202126 October 2021

A new temperature data portal will aid scientists in tracking and accessing paleoclimate data from the Miocene, a past warm climate interval and future climate analogue.

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