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Alka Tripathy-Lang

Alka Tripathy-Lang is a freelance science writer covering stories about Earth and environmental science. Alka holds a Ph.D. in geology from Arizona State University and conducted postdoctoral research at the Berkeley Geochronology Center.

Map of Antarctica colored in shades of green and purple showing the changes in ice thickness
Posted inNews

Mantle Motion Matters for Mapping Modern (and Ancient) Ice

by Alka Tripathy-Lang 11 December 202411 December 2024

Mantle motions have major effects on topography and the distribution of ice sheets. The motions are key for researchers trying to properly parse past mantle movement.

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。

Riley Black, wearing glasses, a ball cap, and a salmon-colored top with a blue flannel shirt, stands next to a wall of rocks.
Posted inFeatures

Riley Black: Bringing Fossils to Life

by Alka Tripathy-Lang 25 July 202425 July 2024

A fossil hunter paints visceral pictures with words about the lives of dinosaurs and other prehistoric creatures.

Bubbles and the silhouettes of fish are seen from below, with light from the surface above them.
Posted inFeatures

Oceanic Cacophony 

by Alka Tripathy-Lang 21 December 202321 December 2023

The ocean is a pretty loud place, and anthropogenic noise is adding another layer to the soundscape.

In this photograph of Jiang Co, a cloudy sky casts shadows over low hills in the background while the lake water, in the midground, features gray-blue-green tones. Spiky tufts of brown grass grow on the shores in the foreground, with dark angular cobbles studding reddish sand.
Posted inNews

Mammal Droppings Preserve Human and Climate History on the Tibetan Plateau

by Alka Tripathy-Lang 11 December 202327 September 2024

Geochemical signatures in sediment, which includes organic molecules from human and animal poop, help scientists track the rise and fall of the Tibetan Empire.

Dawn Wright climbs out of Victor Vescovo’s submersible The Limiting Factor, which took both Wright and Vescovo 10,919 meters (35,823 feet) below sea level, into Challenger Deep.
Posted inFeatures

Dawn Wright: Diving Deep to Discover the Secrets of the Ocean

by Alka Tripathy-Lang 25 July 202315 November 2023

The chief scientist at Esri wound her path into and out of academia.

Hurricane Hunters approach Hurricane Florence in 2018.
Posted inFeatures

Hunting Hurricanes

by Alka Tripathy-Lang 25 May 202325 May 2023

NOAA’s Hurricane Hunters risk their lives each time they fly into the eye of a storm to collect crucial data for forecasting, hurricane modeling, and research.

A sketch of a blue lake in the mid ground with a brown dock in the foreground. In the background, cliff faces of the gray Canadian Rockies repose under a blue sky with white clouds.
Posted inNews

Rocky Voices: A Q&A with Eva Enkelmann

by Alka Tripathy-Lang 15 May 202315 May 2023

A new book aimed at young adults explores the construction of the Canadian Rockies from the perspective of the minerals, fossils, and waterdrops that make and shape the landscape.

Ropy black basalt solidifies, with orange-red lava visible, like embers in a fire.
Posted inNews

Crystals Track Magma Movement Beneath Iceland

by Alka Tripathy-Lang 28 February 202319 July 2023

Crystals from Fagradalsfjall’s eruption mark how mantle magma might have been moving years before geophysical indicators alerted scientists to unrest.

Riverbed construction
Posted inFeatures

Grains of Sand: Too Much and Never Enough

by Alka Tripathy-Lang 25 January 202317 February 2023

Sand is a foundational element of our cities, our homes, our landscapes and seascapes. How we will interact with the material in the future, however, is less certain.

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Features from AGU Publications

Research Spotlights

Storm Prediction Gets 10 Times Faster Thanks to AI

20 May 202520 May 2025
Editors' Highlights

Inferring River Discharge from Google Earth Images

20 May 202515 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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