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Satellite image of the Nile Delta
Posted inEditors' Highlights

Tracking Heavy Metal Accumulation in the Nile Delta

by Benjamin Sulman 22 March 202321 March 2023

Sediment measurements show that flow alterations and discharges are driving increasing concentrations of multiple heavy metals in the Nile Delta, threatening ecosystems, agriculture, and human health.

Posted inEditors' Highlights

Suivie de l’accumulation des métaux lourds dans le Delta du Nil

by Benjamin Sulman 22 March 202321 March 2023

Les analyses de sédiments montrent que la réutilisation de l’eau non traitée et la construction de barrages entraînent l’augmentation des concentrations de métaux lourds dans le Delta du Nil, menaçant gravement les écosystèmes, l’agriculture et la santé humaine.

A group of sheep graze in a green field.
Posted inNews

Veterinary Antibiotics Reduce Soil Carbon Sequestration Capacity

by Rishika Pardikar 21 March 202321 March 2023

Livestock grazing areas sequester less carbon than those under wild herbivores.

Photo of a forest floor with several downed trees. Exposed roots and dirt from a large tree are in the center.
Posted inNews

Roughed-Up Hillsides Reveal Tree-Toppling Winds

by Carolyn Wilke 7 February 20237 February 2023

Researchers are reading pockmarks in the forest floor to study the uprooting of trees in southern Indiana and estimate how fast winds howled through the forest in the past.

Tropical trees and ferns growing on a sloped landscape
Posted inResearch Spotlights

How Much Greenhouse Gas Do Tropical Soils Emit?

by Sarah Derouin 30 January 202321 February 2023

New research found that tropical soils emit nitrogen mostly as inert dinitrogen rather than as greenhouse gases.

Rows of green leaves and grass grow between the dry stubble of already harvested wheat.
Posted inNews

Satellite Data Reveal Uptick in Cover Cropping on Farms

by Katherine Kornei 20 December 202220 December 2022

Over the course of a decade, farmers growing corn and soybeans in the U.S. Midwest increased their adoption of cover cropping—a tenet of so-called conservation agriculture—by fourfold.

A tuft of switchgrass with its associated roots is displayed horizontally on a black background.
Posted inResearch Spotlights

The World’s Roots Are Getting Shallower

by Rebecca Dzombak 17 November 202217 November 2022

Root-filled soils are hot spots of nutrient cycling and carbon storage. New research finds that the world has lost millions of cubic meters of rooted soil volume—and we’re on track to lose much more.

Photograph of USGS scientists collecting soil and worms at a site on Cape Cod, Massachusetts, that was contaminated by per- and polyfluoroalkyl substances.
Posted inEditors' Vox

Widespread “Forever Chemicals” in Subsurface Environments

by Dengjun Wang and Xueyan Lyu 30 September 202230 September 2022

Massive use of materials containing per- and polyfluoroalkyl substances in commercial and industrial sectors has led to their widespread occurrence in subsurface environments.

Aerial view of a farm in Illinois
Posted inNews

Wetlands on the Farm: Potent, Nutrient-Capturing Tools in (Relatively) Small Packages

by Kristen Coyne 21 September 2022

Constructed wetlands can significantly reduce water pollution from tile-drained farms.

Three field photographs showing different vegetation types.
Posted inEditors' Highlights

It’s Cool to be Short When You’re in the Arctic Permafrost

by Ankur R. Desai 15 July 202225 July 2022

Extensive ground temperature measurements complicate our understanding of how vegetation cover, snow duration, and microtopography influence the pace of permafrost thaw in a changing climate.

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EDITORS' VOX
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“Rare and Revealing: Radiocarbon in Service of Paleoceanography”
By Luke C. Skinner and Edouard Bard

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