The annual list of America’s Most Endangered Rivers includes practical calls to action to turn the tide on threatened U.S. waterways.
climate
Posted inEditors' Highlights
Extreme Lithium Isotope Fractionations During Intense Weathering
Extreme lithium fractionation is observed when primary minerals in andesite are transformed to secondary clay minerals and then to oxides with intensive chemical weathering in a tropical climate.
Posted inFeatures
Incredible Journeys on the Crown of the Continent
Living in Geologic Time: The making, breaking, and backpacking of North America’s Continental Divide.
Posted inResearch Spotlights
Trees Wearing Accelerometers Help Track Snowstorms
This device allows scientists to measure how much snow is trapped in canopies and predict changes to snowpack—a critical factor in annual water availability.
Posted inResearch Spotlights
Hidden Upwelling Systems May Be Overlooked Branches of Ocean Circulation
New research suggests that overlooked upwelling systems in western boundary currents play a role in transporting nutrients, carbon, and heat in the global ocean.
Posted inNews
Impact Structure Hidden Under Arctic Ice Dates to the Paleocene
Greenland’s Hiawatha impact structure, more than 30 kilometers in diameter, is much older than previously thought, new results suggest.
Posted inNews
After a Hurricane, Coastal Systems Draw a Line in the Sand
A new study finds nature can’t have it both ways: On the basis of thousands of case studies from dozens of hurricanes, there’s always a trade-off between resistance and resilience.
Posted inScience Updates
A Sharper Look at the World’s Rivers and Catchments
Digital hydrographic maps have transformed global environmental studies and resource management. A major database update will provide even clearer and more complete views of Earth’s waterways.
Posted inFeatures
Could “Lost Crops” Help Us Adapt to Climate Change?
Archaeology might not solve all the agricultural challenges that climate change will bring, but it could provide important lessons and a record of new ideas.