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evolution

A crew of about a dozen people handle a sediment core at their scientific drilling site at Chew Bahir in Ethiopia.
Posted inNews

Did a Chaotic Climate Drive Human Evolution?

by Elise Cutts 7 November 20221 February 2023

A new 620,000-year climate record from East Africa reveals dramatic swings between wet and dry conditions that may have influenced human evolution.

Magnified black-and-white images of two fossils.
Posted inResearch Spotlights

Fluid Dynamics of Tiny, Ancient Marine Animals

Sarah Stanley, Science Writer by Sarah Stanley 2 November 202217 February 2023

Water flow simulations using 3D models of fossils yield new clues to the evolution of organisms known as medusozoans.

A blue-gray river runs through a steep mountainous terrane, with the slopes nearest the river coated in green grasses, plants, and coniferous trees.
Posted inNews

What Can Zircons Tell Us About the Evolution of Plants?

by Alka Tripathy-Lang 5 October 202218 October 2022

The versatile mineral could contain evidence of the evolution of land plants and their effect on the sedimentary system.

Artistic impression of an orange-colored early Earth
Posted inNews

Early Life Learned to Love Oxygen Long Before It Was Cool

by Jennifer Schmidt 16 September 202221 February 2023

Laboratory experiments show that earthquakes may have helped early life evolve in an oxygen-free world.

Aerial photo of a squared-off archaeological dig
Posted inNews

When Did Archaic Humans Control Fire?

Mary Caperton Morton, Science Writer by Mary Caperton Morton 15 December 20209 November 2022

A familiar geochemical technique shines a new spotlight on early hominin use of fire.

A photograph of an Andean páramo that is awash in clouds.
Posted inNews

The Flickering Sky Islands

Lucas Joel by L. Joel 2 August 20197 February 2023

In the Andes, islands in the sky flicker, and evolution kicks into high gear.

Fossil skeleton of a woolly rhinoceros
Posted inNews

Fossils Provide New Clues to Tibetan Plateau’s Evolution

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 12 December 201726 January 2023

The bones of ancient rhinos, elephants, and fish constrain when the Tibetan Plateau rose high enough to prevent migration, a move that forced animals to adapt to high-altitude conditions.

Fountain pen with the word "policy"
Posted inAGU News

Four Position Statements Approved by AGU Board of Directors

by E. Landau 16 September 201624 April 2023

The American Geophysical Union updated one position statement and reaffirmed three others as written.

Posted inNews

Ancient Start of Animal Evolution Wasn't Delayed by Low Oxygen

Cody Sullivan by C. Sullivan 11 January 201614 March 2023

New research finds that Earth had sufficient oxygen 1.4 billion years ago for animals to evolve. Therefore, low oxygen levels probably didn't hold back evolution, as scientists have long thought.

Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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