When solar storms strike, they weaken Earth's defenses against harmful radiation. New satellite measurements reveal just how much.
radioactivity
Posted inResearch Spotlights
Tracking Radioactive Cesium Released During Fukushima Disaster
Scientists probe the Pacific to determine how far the damage from one of the largest nuclear meltdowns in history extends.
Posted inResearch Spotlights
New Insights into the Composition of Inner Earth
Isotopic signatures in volcanic basalts show that Earth's interior is even less uniform than scientists previously thought.
Posted inResearch Spotlights
Aquifers Spew More Pollution into Oceans Than Rivers
A new model makes a direct estimate of contaminants in submarine groundwater discharge.
Posted inScience Updates
Exploring Radioisotopic Geochronology and Astrochronology
IsoAstro Geochronology Workshop: The Integration and Intercalibration of Radioisotopic and Astrochronologic Time Scales;
Madison, Wisconsin, 18–23 August 2014