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.
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."
Climate Change Is Altering Our National Parks Forever
August 18, 2016 03:23 PM - Julie M. Rodriguez, Care2
If you’ve ever taken a camping trip, hiked up a forested mountain trail or simply gone bird watching in an American national park, I have bad news: climate change is increasingly putting our nation’s wilderness in danger. And with July 2016 officially declared the hottest month on the planet since recordkeeping began, matters are only poised to get worse.
Rising global temperatures and changing weather patterns are already having wide-reaching effects on these wild places. Nowhere is this more apparent than in areas that used to be thick with ice and snow.
Overfishing on Coral Reefs Reduces Nutrients Healthy Ecosystems Need
August 16, 2016 03:16 PM - Center for Biological Diversity
Overfishing of large and top predatory fishes on Caribbean coral reefs substantially reduces the amount of nutrients stored and recycled within the ecosystem by fishes, new interdisciplinary research published today in Nature Communications concludes.
The study, by scientists at the University of Washington, the Center for Biological Diversity, the Smithsonian Institution and North Carolina State University, suggests that while avoiding local extinction of fish species is a conservation priority, management actions that preserve large fish groups such as sharks, groupers, snappers and jacks are needed to maintain an adequate flow of nutrients within ecosystems.
Methane leaks: A new way to find and fix in real time
August 16, 2016 10:07 AM - University of Michigan via ScienceDaily
Researchers have flown aircraft over an oil and gas field and pinpointed -- with unprecedented precision -- sources of the greenhouse gas methane in real time. The technique led to the detection and immediate repair of two leaks in natural gas pipelines in the Four Corners region of the U.S. Southwest.
The technique led to the detection and immediate repair of two leaks in natural gas pipelines in the Four Corners region of the U.S. Southwest. The approach could inform strategies for meeting new federal limits on methane emissions from the oil and gas industry. Methane emissions have spiked in recent decades along with the boom in natural gas drilling.
Nature and the Nurture of Aerosols
August 15, 2016 07:07 AM - Pacific Northwest National Laboratory
You've seen it when flying into major cities the world over: a haze over the city. It is caused by aerosol particles, but scientists don't know all the details of the complex chemistry involved. At Pacific Northwest National Laboratory, Dr. Alla Zelenyuk and her team took on a specific part of that haze: originated from isoprene. After being released by the trees and shrubs, isoprene reacts in the atmosphere and becomes assorted chemicals, including IEPOX (isoprene epoxydiols). The team found that IEPOX is a major player in producing aerosols from isoprene and that particle size, certain coatings, and acidity influence how IEPOX behaves.
Threat of wildfires expected to increase as global temperatures rise
August 12, 2016 04:01 PM - United Nations Office for Disaster Risk Reduction
The United Nations Office for Disaster Risk Reduction (UNISDR) has warned that wildfires could become more frequent and more destructive as global temperatures rise and drought conditions plague many regions of the world.
“Last year was the hottest year on record and was above average for the number of reported major droughts and heatwaves. This year we are seeing a similar pattern with new temperature records being set on a monthly basis,” UNISDR chief Robert Glasser said yesterday in a news release issued by the Office.
July Electric Car Sales in China Rose by 188 Percent Over Last Year
August 12, 2016 01:59 PM - Yale Environment 360
Chinese consumers bought 34,000 new electric cars in July, a 188 percent jump over the same period last year, according to CleanTechnica, an energy and technology news organization. The monthly total puts China on track to sell 400,000 electrical vehicles in 2016, accounting for 1.5 percent of the total auto sales market — larger than annual EV sales in Europe, or the U.S., Canada, and Mexico combined.