Washington DC leaking all over
January 17, 2014 09:56 AM - Tim Lucas, Duke University
More than 5,893 leaks from aging natural gas pipelines have been found under the streets of Washington, D.C., by a research team from Duke University and Boston University. A dozen of the leaks could have posed explosion risks, the researchers said. Some manholes had methane concentrations as high as 500,000 parts per million of natural gas -- about 10 times greater than the threshold at which explosions can occur.
Chemicals of Emerging Concern (CECs) identified in sewage sludge
January 16, 2014 04:17 PM - Richard Harth, Arizona State University
Thousands of chemicals serving a variety of human needs flood into sewage treatment plants once their use life has ended. Many belong to a class of chemicals known as CECs (for chemicals of emerging concern), which may pose risks to both human and environmental health. Arjun Venkatesan and Rolf Halden of Arizona State University's Biodesign Institute have been tracking many of these chemicals outlining a new approach to the identification of potentially harmful, mass-produced chemicals, describing the accumulation in sludge of 123 distinct CECs.
Sydney Coastal Waters See Successful Seaweed Transplant
January 16, 2014 03:14 PM - Allison Winter, ENN
In its natural environment, seaweed plays a major role in marine ecosystems. Not only does the plant provide nutrients and energy for organisms up the food chain, but these plants also provide shelter and habitat for many different species. So when 70 kilometers of seaweed vanished from the Australian Coast in the 1970s and 1980s due to high levels of sewage, we would expect to see some dramatic environmental problems. But thanks to recent recovery efforts, a habitat-forming species known as crayweed is making a successful comeback in Sydney's coastal waters.
The girth of a tree
January 15, 2014 04:54 PM - Robin Blackstone, ENN
Thank goodness human growth rates don't match that of trees. For if it did then we would tip the scales of well over a ton by the time we reach retirement! Consider this new research from the Smithsonian Tropical Research Institute (STRI) recently published in the journal Nature. According to the new study, trees put on weight faster and faster as they grow older. Because most trees' growth accelerates as they age this suggests that large, old trees may play an unexpectedly dynamic role in removing carbon from the atmosphere.
From Waste to Food to Fuel: Rice Production and Green Charcoal in Senegal
January 15, 2014 12:54 PM - Andrew Alesbury, Worldwatch Institute
Inadequate management of human waste is a dire problem in much of the developing world. Swelling urban populations can make matters worse by exposing increasingly dense populations to illnesses carried by human waste.
The problem with older thermostats - Mercury
January 15, 2014 07:51 AM - NRDC
NRDC Study Shows More Than 1.8 Million Thermostats Containing 8 Tons of Mercury Need Safe Recycling In Illinois. The state should raise collection goals for mercury-laden thermostats to avoid contaminating the environment. There are more than 1.8 million thermostats containing eight tons of mercury in Illinois homes and buildings, according to a study by the Natural Resources Defense Council and Clean Water Fund, which are calling for stronger state rules this year to speed up safe recycling of these thermostats.
Economic benefits of reducing nitrogen pollution
January 14, 2014 08:14 AM - Tom Marshall, Planet Earth Online
Falling levels of nitrogen in the atmosphere across Europe may be much more economically beneficial than previously believed, according to a recent study. Indeed, scientists think the UK alone benefits by around £65 million a year. Levels of atmospheric nitrogen have fallen by around a quarter in Europe since 1990, mostly because of tighter rules on emissions from engines and industry. Scientists are still working to understand the consequences. This is difficult, because excess nitrogen affects the benefits that nature gives us (known as 'ecosystem services') in many different ways — some positive and some harmful. For example, nitrogen is an important plant nutrient, which means services that depend on plant growth, such as crops and timber from woodlands, will benefit from more of it in the atmosphere. Conversely, falling nitrogen levels will harm these services - so cutting pollution costs the economy money.
Popularity of plug-in vehicles on the rise
January 13, 2014 09:30 AM - Eric Justian, Triple Pundit
Good news for those living at the intersection of manufacturing and environmentalism. Here in the U.S., sales of plug-in electric and hybrid vehicles almost doubled between 2012 and 2013 with an 84 percent jump to 96,600 of the vehicles sold. That’s 49,000 plug-in hybrids (like the Volt) and 47,600 pure battery powered plug-in vehicles sold.
How plants respond to climate change
January 12, 2014 08:24 AM - ScienceDaily
Swiss plants, butterflies and birds have moved 8 to 42 meters uphill between 2003 and 2010, as scientists from the University of Basel write in the online journal PLoS One. Climate warming is changing the distribution of plants and animals worldwide. Recently it was shown that in the past two decades, European bird and butterfly communities have moved on average 37 and 114 kilometers to the north, respectively.
Tree Island restoration
January 10, 2014 09:06 AM - Liz Kimbrough, MONGABAY.COM
Worldwide, large swaths of land lay barren in the wake of agricultural expansion, and as global forest cover continues to decline, carbon and water cycles, biodiversity, and human health are impacted. But efforts to restore abandoned pastures and agricultural plots back into functioning forest ecosystems are often hindered by high costs and time requirements. Fortunately, scientists have developed a new method for a more cost effective solution to forest restoration, the establishment of "tree islands."