New research reconstructs the Bering Strait’s flooding history, raising surprising questions about human migration and how ice sheets form.
How Much Greenhouse Gas Do Tropical Soils Emit?
New research found that tropical soils emit nitrogen mostly as inert dinitrogen rather than as greenhouse gases.
The Burning Tundra
As wildfires blaze through the Arctic, scientists examine the role of landscape characteristics on wildfire ecosystem responses in northern aquatic ecosystems.
Missouri River Floodplain Expansion, Services, and Resiliency
Benefits might accrue for both wildlife and climate resiliency if more floodplains along the lower Missouri River were allowed to flood.
Inventorying Earth’s Land and Ocean Greenhouse Gases
A new special collection in AGU journals will present findings from the Second REgional Carbon Cycle Assessment and Processes (RECCAP2) study with a decade of data on greenhouse gas growth.
Wildfires May Alter the Nitrogen Cycle—and Air Pollution
Research indicates that wildfires could be bolstering soil emissions of air pollutants that contribute to smog and climate change.
A Global Map of Human Sewage in Coastal Ecosystems
Prodigious quantities of nitrogen from human waste flow into coastal waters, a study of nearly 135,000 watersheds reveals.
What Controls Nitrous Oxide Emissions from Rivers?
Statistical and numerical models show that denitrification efficiency is a key parameter controlling the production of N2O from rivers, providing a target for river restoration projects.
Purple Bacteria Fix Nitrogen in Proterozoic-Analogue Lake
A new study challenges the assumption that cyanobacteria were the only major nitrogen fixers in the Proterozoic eon.