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proxies

A cave with white stalagmites and stalactites.
Posted inNews

Cave Deposit Links Greenland’s and Europe’s Climate Records with a German Volcano

by Bill Morris 21 February 202521 February 2025

Dating a late Pleistocene eruption has big implications for understanding the Younger Dryas—and current climate change.

A black smoker, shaped like a stone cylinder on the ocean floor, spews black smoke into the water.
Posted inNews

Arctic Hydrothermal Vents May Resemble Those on Enceladus

by Anna FitzGerald Guth 17 December 202417 December 2024

By studying hydrogen-rich vent sites on Earth, scientists could learn more about the hidden ocean of Saturn’s icy moon—one of our solar system’s likeliest candidates for harboring life beyond Earth.

Seen from below, a group of bats hang from a rocky cave ceiling. One has its mouth wide open in a yawn.
Posted inResearch Spotlights

Bat Poop Records Fire History

by Rebecca Dzombak 31 October 20244 November 2024

Charcoal stored in preserved guano gives researchers a new way to reconstruct regional fire histories.

Layers of rock visible in a cliff in Nanliang, Shanxi, China.
Posted inNews

Mega El Niño May Have Led to Major Mass Extinction 252 Million Years Ago

by Rebecca Owen 11 October 202411 October 2024

The extreme climate conditions wrought by a decades-long ENSO pattern could be the culprit in the Great Dying, which wiped out nearly 90% of life on Earth.

An underwater picture of a scientist wearing red and black waterproof pants and boots standing in thigh-high water on an ancient underwater bridge.
Posted inNews

Underwater Bridge Suggests a Surprising Date for First Migration to Mallorca

by Elise Cutts 8 October 20249 October 2024

A controversial study suggests that humans settled on the Spanish island 1,000 years earlier than archaeologists believe.

在这张江错的照片中,多云的天空在背景中的低矮山丘上投下阴影。中景的湖水呈现灰蓝绿色的色调。前景中,湖岸上生长着一簇簇棕褐色的小草,红色沙地上点缀着棱角分明的深色鹅卵石。
Posted inNews

哺乳动物的粪便保存了青藏高原的人类和气候历史

by Alka Tripathy-Lang 27 September 202427 September 2024

沉积物中的地球化学标记,包括来自人类和动物粪便的有机分子,帮助科学家们追寻吐蕃帝国的兴衰。

汉代长城是一层层长满青草的褐色结构。
Posted inNews

在中国长城寻找气候线索

by J. Besl 23 September 202423 September 2024

在中国的西北部,沙漠条件保存了长城最偏远的部分。科学家们正在探索着2000年前的建筑材料,以寻找该地区过去气候的迹象。

Two wide, brown, gnarled tree trunks with sparse, dark greenery grow against a blue sky from lightly snow- and rock-covered ground, with low, sparse surrounding shrublike vegetation and more dark-colored trees in the far distance along a ridgeline.
Posted inResearch Spotlights

Ancient Pines Could Reveal the Heat of Thousands of Past Seasons

Sarah Stanley, Science Writer by Sarah Stanley 5 August 20245 August 2024

A novel 3D CT scan approach unlocks temperature records preserved in the gnarled wood of bristlecone pines.

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.

Two people row boats across a blue lagoon, which is flanked by verdant trees.
Posted inNews

The Crocodile Dundee Site Helping Rewrite the History of Australian Bushfires

by Bill Morris 4 April 20244 April 2024

A lake made famous by Hollywood has yielded powerful new evidence that humans have conducted controlled burns on the Red Continent for tens of thousands of years.

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Features from AGU Publications

Research Spotlights

River Alkalinization and Ocean Acidification Face Off in Coastal Waters

21 May 202521 May 2025
Editors' Highlights

Creep Cavitation May Lead to Earthquake Nucleation

22 May 202521 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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