Ecological consequences of amphetamine pollution in urban streams
August 25, 2016 03:32 PM - Cary Institute of Ecosystem Studies via EurekAlert!
Pharmaceutical and illicit drugs are present in streams in Baltimore, Maryland. At some sites, amphetamine concentrations are high enough to alter the base of the aquatic food web. So reports a new study released today in the journal Environmental Science & Technology, which is one of the first to explore the ecological consequences of stimulant pollution in urban streams.
Lead author Sylvia S. Lee conducted the work as a postdoctoral researcher at the Cary Institute of Ecosystem Studies. Lee, now with the Environmental Protection Agency, comments, "Around the world, treated and untreated wastewater entering surface waters contains pharmaceuticals and illicit drugs that originate from human consumption and excretion, manufacturing processes, or improper disposal. We were interested in revealing how amphetamine exposure influences the small plants and animals that play a large role in regulating the health of streams."
Selecting the right house plant could improve indoor air
August 24, 2016 07:30 AM - American Chemical Society via EurekAlert!
Indoor air pollution is an important environmental threat to human health, leading to symptoms of "sick building syndrome." But researchers report that surrounding oneself with certain house plants could combat the potentially harmful effects of volatile organic compounds (VOCs), a main category of these pollutants. Interestingly, they found that certain plants are better at removing particular harmful compounds from the air, suggesting that, with the right plant, indoor air could become cleaner and safer.
The researchers are presenting their work today at the 252nd National Meeting & Exposition of the American Chemical Society (ACS). ACS, the world's largest scientific society, is holding the meeting here through Thursday. It features more than 9,000 presentations on a wide range of science topics. A brand-new animation on the research is available at http://bit.ly/ACSindoorairpollution.
"Buildings, whether new or old, can have high levels of VOCs in them, sometimes so high that you can smell them," says Vadoud Niri, Ph.D., leader of the study.
Smoke Waves Are the Next Climate Change Problem
August 24, 2016 07:25 AM - s.e. smith, Care2
In the hills near Los Angeles, the Blue Cut Fire just ripped through 36,000 acres, taking dozens of homes along with it, spurring a major evacuation, and even requiring temporary highway closures. But the merciless flames of the Blue Cut Fire almost pale in comparison with the flood of wildfires across the Golden State, and the West at large, in an era when the wildfire season is growing longer and more aggressive every year. Climate change is the reason why, and researchers are discovering that the cost of wildfires may be bigger than we imagined: They’re tracking deadly “smoke waves” that sweep the landscape, causing serious respiratory health problems.
Nanofur for oil spill cleanup
August 23, 2016 10:51 AM - Karlsruher Institut Für Technologie (KIT) via EurekAlert!
Some water ferns can absorb large volumes of oil within a short time, because their leaves are strongly water-repellent and, at the same time, highly oil-absorbing. Researchers of KIT, together with colleagues of Bonn University, have found that the oil-binding capacity of the water plant results from the hairy microstructure of its leaves. It is now used as a model to further develop the new Nanofur material for the environmentally friendly cleanup of oil spills. (DOI: 10.1088/1748-3190/11/5/056003)
Damaged pipelines, oil tanker disasters, and accidents on oil drilling and production platforms may result in pollutions of water with crude or mineral oil. Conventional methods to clean up the oil spill are associated with specific drawbacks.
Investing in Walkable Neighborhoods
August 22, 2016 07:24 AM - Nithin Coca, Triple Pundit
According to Redfin, several American cities – some the usual progressive suspects, but others quite surprising – are making moves to build more homes in walkable neighborhoods. Other, however, are stuck in the past, building more of the distant suburbs.
Why do we need more walkable cities? Quite simply because walkable cities are, by definition, sustainable cities. Transportation remains a major source of greenhouse gas pollution, and, unlike electricity or agriculture, the United States remains firmly stuck on a fossil-fuel dependent transport infrastructure. When we live in spread out suburbs, far from work, shopping, schools, and cultural centers, we have to drive. Often, we drive inefficient, single-occupancy vehicles, burning more fossil fuels, and creating more traffic.
Fixing America's Waste Problem
August 19, 2016 04:14 PM - Nithin Coca, Triple Pundit
America’s massive, growing landfills are the result of many decades of bad policies and decisions. And it will take a concerted, society-wide effort to solve this problem. Let’s dive deeper into just how big our landfill waste problem is and how we can begin to shift toward a circular economy.
New Study Challenges Assumption of Asbestos' Ability to Move in Soil
August 19, 2016 03:23 PM - University of California - San Diego via EurekAlert!
A new study led by Scripps Institution of Oceanography at the University of California San Diego scientist Jane Willenbring challenges the long-held belief that asbestos fibers cannot move through soil. The findings have important implications for current remediation strategies aimed at capping asbestos-laden soils to prevent human exposure of the cancer-causing material.
Willenbring, along with University of Pennsylvania postdoctoral researcher Sanjay Mohanty, and colleagues tested the idea that once capped by soil, asbestos waste piles are locked in place. Instead they found that dissolved organic matter contained within the soil sticks to the asbestos particles, creating a change of the electric charge on the outside of the particle that allows it to easily move through the soil.
Cloth masks offer poor protection against air pollution
August 19, 2016 11:12 AM - University of Massachusetts at Amherst via EurekAlert!
Results of a new study by environmental health scientists at the University of Massachusetts Amherst suggest that inexpensive cloth masks worn by people who hope to reduce their exposure to air pollution vary widely in effectiveness and could be giving users a false sense of security, especially in highly polluted areas.
Researchers Richard Peltier, Kabindra Shakya and colleagues believe theirs is the first study to rigorously test disposable surgical masks and washable cloth masks, which are widely used in Asia and Southeast Asia for personal protection against airborne particulate matter. Their study shows that "wearing cloth masks reduced the exposure to some extent," but "the most commonly used cloth mask products perform poorly when compared to alternative options available on the market."
Blue Cut Fire in California spreads quickly
August 18, 2016 01:43 PM - NASA/GODDARD Space Flight Center via EurekAlert!
The Blue Cut Fire, just outside of Los Angeles, is a quickly growing fire that is currently an imminent threat to public safety, rail traffic and structures in the Cajon Pass, Lytle Creek, Wrightwood, Oak Hills, and surrounding areas. An estimated 34,500 homes and 82,640 people are being affected by the evacuation warnings that have been issued.
Researchers discover a special power in wheat
August 17, 2016 05:15 PM - University of Queensland via EurekAlert!
A new photosynthesis discovery at The University of Queensland may help breed faster-growing wheat crops that are better adapted to hotter, drier climates.
A research team led by Queensland Alliance for Agriculture and Food Innovation researcher Professor Robert Henry has today published a paper in Scientific Reports, showing that photosynthesis occurs in wheat seeds as well as in plant leaves.
"This discovery turns half a century of plant biology on its head," Professor Henry said.
"Wheat covers more of the earth than any other crop, so the ramifications of this discovery could be huge. It may lead to better, faster-growing, better-yielding wheat crops in geographical areas where wheat currently cannot be grown."