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12 December 2019
One of Europe’s worst famines likely caused by devastating floods
Europe’s Great Famine of 1315–1317 is considered one of the worst population collapses in the continent’s history. Historical records tell of unrelenting rain accompanied by mass crop failure…Now, new research using tree ring records confirms the historical data, showing the years of the Great Famine were some of Europe’s wettest.
6 December 2019
Peatlands release more methane when disturbed by roads
Roads built through acidic wetlands may make greenhouse gas emissions from the wetlands spike by damming natural water flow, according to a new study in AGU’s Journal of Geophysical Research: Biogeosciences.
20 March 2019
Where do microplastics go in the oceans?
Where do tiny bits of plastic go when they are flushed out to sea? Much gets caught in subtropical ocean gyres, but more microplastic may be reaching Arctic waters than previously appreciated. Watch a simulation of microplastic drift over 12 years in the North Pacific.
7 January 2019
Colorado’s Lake Dillon is warming rapidly
The surface waters of Lake Dillon, a mountain reservoir that supplies water to the the Denver area, have warmed by nearly 5 degrees Fahrenheit (2.5 degrees Celsius) in the last 35 years, which is twice the average warming rate for global lakes. Yet surprisingly, Dillon does not show adverse environmental changes, such as nuisance algal blooms, often associated with warming of lakes.
15 August 2018
Amazon pirating water from neighboring Rio Orinoco
The Amazon River is slowly stealing a 40,000-square-kilometer (25,000-square-mile) drainage basin from the upper Orinoco River, according to new research suggesting this may not be the first time the world’s largest river has expanded its territory by poaching from a neighbor. The rare conjunction could help researchers understand how river systems evolve and how the Amazon Basin grew to dominate the South American continent.
1 June 2018
Reconstructing America’s longest water level and instrumented flood record in Boston
By Jan Lathrop Using newly-discovered archival measurements to construct an instrumental record of water levels and storm tides in Boston since 1825, researchers report that local averaged relative sea level rose by nearly a foot (0.28 meters) over the past 200 years, with the greatest increase occurring since 1920. The work also highlights tides and their significant effect on flooding in the city. The evaluation of storm events since 1825 …
25 January 2018
New study reveals how icy surface ponds on Himalayan glaciers influence water flow
The flow of water that supports hydro-electric and irrigation infrastructure in the mountain regions of Nepal and India is regulated by hundreds of large icy ponds on the surface of some of the world’s highest glaciers, scientists have revealed.
24 January 2018
Dust on snow controls springtime river rise in West
A new study has found that dust, not spring warmth, controls the pace of spring snowmelt that feeds the headwaters of the Colorado River.
14 December 2017
The continental U.S. is experiencing more flooding, and earlier in the year
The frequency of flooding in the continental U.S. is increasing, and seasonality of floods is shifting, according to new research.
4 December 2017
Stronger storms hamper ability of streams and rivers to clean up pollution
Freshwater streams and rivers naturally clean up some forms of pollution originating from urban and agricultural areas, but increased storm intensity reduces this ability.