A new technique using 81Kr can measure the age of old groundwater in arid regions. The method can be used as a proxy for past climates and weather patterns.
geochemistry
Posted inNews
New Tool Reveals That Soils Are Teeming with Active Microbes
BONCAT, a new type of amino acid tagging, highlights and categorizes active soil microbes in situ.
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How Ice Cores Are Helping to Track Preindustrial Ozone
Research helps allay concerns about discrepancies between atmospheric chemistry models and historical direct measurements.
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The Jail That Keeps Oxygen in the Air
Oxygen shouldn’t be in the air we breathe. But it is, and the reason why is almost criminal.
Posted inResearch Spotlights
Treating Colloids as Clusters Better Predicts Their Behavior
New research suggests that an accurate prediction of colloidal particle mobilization in the environment should account for the effect of clustering.
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Alexander R. “Mac” McBirney (1924–2019)
This former West Point graduate and coffee grower transformed igneous petrology and volcanology.
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The Toxic Legacy of DDT Lives On in Remote Canadian Lakes
DDT and its breakdown products permeate lake sediments decades after the pesticide was banned.
Posted inOpinions
Uncontrolled Chemical Releases: A Silent, Growing Threat
Uncontrolled releases of household, industrial, and agricultural chemicals during natural disasters pose an underappreciated hazard to humans and ecosystems. Here’s what we can do.
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Chemical Patterns May Predict Stars That Host Giant Planets
Stars with giant planets tend to have a few key elements in abundance. A new algorithm used these patterns to predict hundreds of stars that will likely have exoplanets if we go looking for them.
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Ancient Water Underlies Arid Egypt
A hidden trove of groundwater is left over from the last ice age.