A new study finds that the low-cost, extreme draining of a reservoir in Oregon aided downstream migration of juvenile chinook salmon -- and led to the gradual disappearance of two species of predatory invasive fish in the artificial lake.
A new study of UK lake sediment records stretching back over several centuries has found that the floods that hit Northern England in 2009 and 2015 ('Storm Desmond'),were the largest in 600 years, pointing to the impact of climate changes on the frequency and magnitude of these extreme events.
Anthropologists discovered a tool made out of high-quality translucent jadeite with an intact rosewood handle at a site where the ancient Maya processed salt in Belize. The discovery of these high-quality materials -- jadeite and rosewood -- used as utilitarian tools, demonstrates that salt workers played an important role in the Classic Maya marketplace economy more than 1,000 years ago.
Harmful algal blooms pose a unique toxic threat in Lake Erie's central basin, new research has found. Not only do blooms routinely occur in this area, which previously was not thought to be an area of concern, they can also produce types of cyanobacterial toxins that aren't typically detected through routine water-safety monitoring, according to a study published in the Journal of Great Lakes Research.
Changes to alpine streams fed by glaciers and snowfields due to a warming climate threaten to dramatically alter the types of bacteria and other microbes in those streams, according to new research. But streams that are fed by underground ice insulated by rock -- called 'icy seeps' -- offer some hope that the impact of climate change will be less severe in some areas.
Rainfall from the Asian summer monsoon has been decreasing over the past 80 years, a decline unprecedented in the last 448 years, according to a new study in the AGU journal Geophysical Research Letters.
A study by The University of Texas at Austin has quantified the amount of water flowing in major Texas rivers during heavy rains and found that there is enough room in coastal aquifers to store most of it. This discovery means that capturing and storing water could be a feasible option for partially mitigating floods and droughts, which are both expected to increase in frequency and intensity as the climate changes.
Medications excreted in the urine or dumped into the toilet can end up in the water supply, just like lotions or cosmetics that wash off the body and go down the sink or shower drain. Unfortunately, conventional wastewater treatment cannot completely remove pharmaceuticals and personal care products (PPCPs). Now, researchers reporting in ACS Applied Materials & Interfaces have developed an adsorbent membrane that they say could be used to purify water contaminated with PPCPs.
Infrastructure development and other man-made changes have already fragmented or disrupted two-thirds of Earth's longest rivers. Dams and reservoirs are the leading contributors to connectivity loss in global rivers. A team of 34 international researchers from World Wildlife Fund (WWF), McGill and other institutions assessed the connectivity status of 12 million kilometers of rivers worldwide, providing the first-ever global assessment of the location and extent of the planet's remaining free-flowing rivers.
Columbia Engineering researchers report that they have developed a radically different desalination approach--"temperature swing solvent extraction (TSSE)"--for hypersaline brines. Their study demonstrates that TSSE can desalinate very high-salinity brines, up to seven times the concentration of seawater. Says PI Ngai Yin Yip, "Our results show that TSSE could be a disruptive technology--it's effective, efficient, scalable, and can be sustainably powered."