The architecture of the nation’s capital reveals a secret geologic history—take a walking tour to spot the interesting fossils and minerals in the stones used to build the halls of power.
history
Posted inNews
Ancient Romans Polluted Their Lakes Just Like We Do Today
Sediments from a lake in Switzerland reveal that ancient Romans triggered dead zones caused by the runoff of nutrients. Sound familiar?
Posted inNews
Black Carbon Not the Primary Cause of Historic Glacial Retreat
Ice cores and glacial records reveal that European glaciers retreated before the rise of industrialization in the 1870s, suggesting that soot deposition did not primarily drive the shift.
Posted inNews
U.S. Mint Unveils Design for Special Apollo 11 Coin
The showcase of a commemorative coin kicks off national celebrations of the Apollo anniversaries.
Posted inScience Updates
Nations Work Together to Size Up Caribbean Tsunami Hazards
An international collaboration is using historical records and modeling to assess tsunami potential in this high-risk region.
Posted inNews
Lidar Uncovers Thousands of New Maya Structures
Jungle-piercing lidar surveys over ancient Maya sites give scientists the most extensive maps of lowland Maya civilization to date.
Posted inENGAGE, News
Severe Drought May Have Helped Hasten Ancient Maya’s Collapse
Chemical signatures from sediments in lake cores reveal that the centuries-long drought during the fall of Classic Maya civilization was worse than researchers had imagined.
Posted inEditors' Highlights
500 Years of Atmospheric River Landfalls in Southwestern USA
A network of tree-ring chronologies has been used to develop the first reconstruction of atmospheric river landfalls on the US Pacific Coast over the last 500 years.
Posted inResearch Spotlights
The Case of the Missing Lunar Heat Flow Data Is Finally Solved
Decades-old data analyzed for the first time suggest that astronauts’ disturbance of the Moon surface increased solar heat intake, warming the ground below.
Posted inResearch Spotlights
Constraining Central Washington’s Potential Seismic Hazard
Fault geometry and slip rate analyses show deformation in the Yakima Fold Province accelerated in the Pleistocene and has remained elevated, offering new insights into earthquake recurrence intervals.