• About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Science Policy Tracker
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos
  • AGU.org
  • Career Center
  • Join AGU
  • Give to AGU
  • About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Science Policy Tracker
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos
Skip to content
  • AGU.org
  • Career Center
  • Join AGU
  • Give to AGU
Eos

Eos

Science News by AGU

Support Eos
Sign Up for Newsletter
  • About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Science Policy Tracker
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos

unsolved mysteries

Image of Hurricane Irene captured from aboard the International Space Station.
Posted inResearch Spotlights

What Causes Long-Term North Atlantic Surface Temperature Cycles?

Sarah Stanley, Science Writer by Sarah Stanley 25 April 201625 January 2023

New evidence strengthens a likely link between 20- to 40-year sea surface temperature fluctuations and varying ocean circulation patterns.

Posted inResearch Spotlights

Modeling the Effects of Clouds on Climate

by W. Yan 11 April 20166 July 2022

New research investigates how mixed-phase cloud partitioning and cloud cover compensate each other in GCMs.

researchers-cliff-face-measure-rock-movement-precedes-rockfall
Posted inNews

A Warm Day Can Trigger Rockfalls

Lucas Joel by L. Joel 5 April 20163 November 2022

Research on a cliff face in Yosemite National Park finds that when rockfalls happen without an obvious cause, ordinary warming in the Sun could be the culprit.

Dipolarization fronts (DFs), bursty bulk flows (BBFs), flux transfer events (FTEs), and Kelvin-Helmholtz instability (KHI) in a high-resolution simulation of an idealized substorm.
Posted inScience Updates

Great Mysteries of the Earth's Magnetotail

by M. I. Sitnov, V. G. Merkin and J. Raeder 21 March 201618 July 2023

Workshop on Magnetotail Reconnection Onset and Dipolarization Fronts; Laurel, Maryland, 16–18 September 2015

Sea ice near West Greenland in summer 2014.
Posted inScience Updates

How Will Sea Ice Loss Affect the Greenland Ice Sheet?

by F. S. R. Pausata, A. N. LeGrande and W. H. G. Roberts 14 March 20166 March 2023

On the Puzzling Features of Greenland Ice-Core Isotopic Composition; Copenhagen, Denmark, 26–28 October 2015

Posted inResearch Spotlights

Magnetic Field Pulsations and Aurora Tightly Linked

by Mark Zastrow 12 February 201627 September 2022

Mysterious plasma waves from space are generating displays of aurora near Earth's poles.

Posted inNews

What Makes the Ground Suddenly Pop?

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 9 February 201630 September 2022

A geological feature in Michigan’s wooded Upper Peninsula has scientists scratching their heads.

Posted inNews

Proposed Planet Nine Elicits Cheers, Yawns, Hunt for Proof

by R. Cowen 4 February 201625 April 2023

Evidence of a large, unseen planet at the solar system's margins prompted a flurry of scientific paper downloads, as well as oodles of skepticism. There's no sighting yet of the purported body.

Posted inNews

What Caused the Sudden Heating of Uranus's Atmosphere?

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 13 January 201622 March 2023

A recently observed temperature reversal on Uranus may offer a clue to a long-standing mystery: Why are the upper atmospheres of gas giants so hot?

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.

Posts pagination

Newer posts 1 … 24 25 26 27 28 Older posts
A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

Features from AGU Publications

Research Spotlights

Machine Learning Simulates 1,000 Years of Climate

27 August 202527 August 2025
Editors' Highlights

As Simple as Possible: The Importance of Idealized Climate Models

28 August 202526 August 2025
Editors' Vox

Waterworks on Tree Stems: The Wonders of Stemflow

21 August 202520 August 2025
Eos logo at left; AGU logo at right

About Eos
ENGAGE
Awards
Contact

Advertise
Submit
Career Center
Sitemap

© 2025 American Geophysical Union. All rights reserved Powered by Newspack