What Conditions Accompanied the Late Ordovician Mass Extinction?
The second-largest mass extinction in Earth’s history took place in a period of stresses from non-sulfidic anoxia in shelf areas, together with glacioeustatic sea-level change…
A Deep-Space Origin for Volatile-Rich Asteroids
Spectral data and modeling suggest that volatile-rich main-belt asteroids initially formed at much greater distances from the Sun (>10 AU).
Field Kits Effectively Predict Arsenic Contamination
Field kits used in Bangladesh to test arsenic exposure from contaminated drinking water are effective in comparison to expensive laboratory arsenic tests.
Managing Strategic Water Resources in a Changing Climate
Another significant step has been taken in methods for managing water resources in the face of climatic changes and other future uncertainties. Dynamic adaptation is…
![Figure 2 from Wang and Tkalčić [2021]](https://i0.wp.com/eos.org/wp-content/uploads/2022/01/2021GL094784-Figure-2-sized-1200x675-1.png?resize=800%2C600&ssl=1)
Observation of Shear Wave Anisotropy in the Earth’s Inner Core
Coda-correlation wavefields reveal direction-dependent inner-core shear-wave speed, ~5 s faster in directions oblique to the Earth’s rotation axis than directions parallel to the equatorial plane.
The Flowers that Bloom in the Spring (but Later)
Mismatch between the pace of climate change and crop phenology may signal a new challenge for climate change adaptation.
Hot Lakes in a Cold Climate
Arctic warming may release less carbon dioxide from high latitude lakes but increase their climate impact by releasing more methane.
Clouds Overshooting Tops and Typhoon Intensity
An examination of the relationship between the diurnal variation of cloud overshooting tops density and typhoon intensity in 45 typhoons, using the Himawari-8 Satellite.
Next-Generation Solar Proton Monitors for Space Weather
NOAA’s weather satellites at geosynchronous orbit also measure space weather and a new series of instruments bring improved capabilities for monitoring and science discovery.
Tracking from Space how Extreme Drought Impacts Carbon Emissions
Carbon dioxide emissions from wildfires combined with reduced carbon uptake by intact ecosystems during the 2019-202 0 fire season to approximately double Australia’s annual carbon emissions.
Plant Root Exudates Mediate Soil Nutrient Transport
Plant roots mediate solute transport through the soil immediately surrounding them by introducing polymers and other binding compounds that disrupt water transport pathways between soil pore spaces.
An Unstable Magnetic Field in Central Asia 2500-1500 Years Ago
The geomagnetic field intensity – poorly described – varies spatially and temporally on centennial time scales. A recent study fills an important gap in Central Asia and discusses global implications.
Pro-Poor Flood Risk Management Can Reduce Urban Inequality
Rich people’s aversion to flood risk results in poor people living in the most vulnerable locations poverty. Pro-poor flood risk management policies could have a significant impact on inequality.
Water Quality Policy Must Consider Stored Watershed Phosphorous
Phosphorous stored in watersheds and affects water quality for decades. A new model predicts phosphorus accumulation and depletion, and the consequences for water quality conservation measures.
American Legacy Paleosecular Variation Data Unlocked
The geomagnetic field changes regionally on centennial time scales. A recent study unlocks three historical archives from the “Four Corners” region (southwest USA) reconciling previous discrepancies.
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