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life as we know it

Rocas saliendo del océano en una costa
Posted inNews

Circones de 4,000 millones de años podrían contener nuestras evidencias más antiguas de la existencia de agua dulce

by Nathaniel Scharping 4 September 20244 September 2024

Cristales australianos apuntan a la existencia de agua dulce, así como de continentes que se elevaban sobre el océano Hadeano de la Tierra.

A sand-filled gully carves through layers of rocks on Mars
Posted inNews

Curiosity Digs Up Evidence of a Cold, Wet Martian Past

Damond Benningfield, Science Writer by Damond Benningfield 21 August 202421 August 2024

Amorphous materials, which are rarely studied on Earth, yield insights into the history of Gale Crater and the early Martian environment.

Red-tinted water flows in a shallow stretch of river, with a rocky shoreline and forested hillslope in the background.
Posted inScience Updates

How Great was the “Great Oxidation Event”?

by Aubrey Zerkle 30 July 202416 January 2025

Geochemical sleuthing amid acid mine runoff suggests that scientists should rethink an isotope signal long taken to indicate low levels of atmospheric oxygen in Earth’s deep past.

Rocks sticking out of the ocean on the shore
Posted inNews

Four-Billion-Year-Old Zircons May Contain Our Earliest Evidence of Fresh Water

by Nathaniel Scharping 16 July 20244 September 2024

Australian crystals hint at fresh water, as well as land rising above Earth’s Hadean ocean.

A van labeled “Extremophiles” stands next to ladders extending into a small, deep pit dug into the Atacama Desert.
Posted inNews

Researchers Find Bacterial Communities Deep Beneath the Atacama

by Alejandro Pardo 12 July 202411 July 2024

Extremophile microbes exist in the gypsum-rich “fringes” of the driest place on Earth.

Three images of two-lobed Arrokoth in varying clarity and color.
Posted inNews

A Sugar Coating for Arrokoth

by Jonathan O’Callaghan 10 July 202410 July 2024

A Kuiper Belt object might contain ribose and glucose on its surface—the same elements that could have seeded life on Earth.

在前景中,明亮的蓝白色喷射物从一个弯曲的蓝白色表面散发出来,映衬着星空背景,附近有一个金色的环状行星和两个较小的类似卫星的球体。
Posted inResearch Spotlights

在土卫二上寻找生命:我们应该问些什么问题?

Sarah Stanley, Science Writer by Sarah Stanley 11 June 202411 June 2024

在冰冷的海洋世界中,建立在有机化学进化理论基础上的研究框架,可能会比仅仅寻找生命存在的直接证据,带来更深刻的见解。

A grayish rock with white spots and a brighter brown patch sits on a reflective surface.
Posted inNews

A Splashy Meteorite Was Forged in Multiple Collisions

Damond Benningfield, Science Writer by Damond Benningfield 7 June 20249 June 2024

The Winchcombe meteorite was recovered, largely from a driveway, just hours after it fell to Earth, preserving evidence that its early relatives could have filled Earth’s oceans.

An illustration of plant life beneath the ocean with an aurora in the sky
Posted inNews

A Magnetic Low May Have Paved the Way for Complex Life

by Saugat Bolakhe 5 June 20245 June 2024

Multicellular life blossomed when Earth’s magnetic field was at an all-time low.

A planet with oceans, clouds, and landmasses appears against a black background.
Posted inNews

A Step Closer to Solving the Fermi Paradox

Katherine Kornei, Science Writer by Katherine Kornei 24 May 20249 January 2025

Finding evidence of complex life elsewhere in the Milky Way galaxy hinges on locating rocky planets with plate tectonics and a mixture of landmasses and oceans, new research suggests.

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Features from AGU Publications

Research Spotlights

Coherent, Not Chaotic, Migration in the Brahmaputra-Jamuna River

2 July 20252 July 2025
Editors' Highlights

The Mid-20th Century Winter Cooling in the Eastern U.S. Explained

3 July 20253 July 2025
Editors' Vox

Water Tracks: The Veins of Thawing Landscapes

25 June 202525 June 2025
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