Majority of US Streams and Rivers are in 'Poor Condition,' says EPA Survey
March 26, 2013 12:32 PM - Allison Winter, ENN
The U.S. Environmental Protection Agency (EPA) has just released the results of a comprehensive survey that looks at the health of thousands of stream and river miles across the country, and frankly the results are not very encouraging. The survey was conducted as part of an ongoing effort by the EPA to determine which rivers and streams are healthy, which are improving, and which require more protection and restoration efforts.
Urban Greening May Reduce Crime Rates in Cities
March 26, 2013 09:01 AM - Allison Winter, ENN
Urban planning is not only important to the strategic design behind a city’s infrastructure, but now one study finds that the landscaping itself which emphasizes urban greening and the introduction of well-maintained vegetation, can lower the rates of certain types of crime such as aggravated assault, robbery and burglary, in cities. According to a Temple University study, "Does vegetation encourage or suppress urban crime? Evidence from Philadelphia, PA," researchers found that the presence of grass, trees and shrubs is associated with lower crime rates in Philadelphia.
Verizon Introduces 'MAGIC' Buses to Reduce Carbon Footprint
March 25, 2013 08:58 AM - Editor, Justmeans
To help reduce traffic congestion and carbon dioxide emissions in New York City, and better serve customers, Verizon has rolled out a fleet of 25 buses that will pick up company technicians at central locations throughout the city and then transport them to local job sites. The fleet - known as MAGIC, which stands for Mobile Area Garage Installation Center - removes approximately 250 Verizon trucks from the city's roads and frees up the same number of parking spots.
Solar Cell Power Breakthrough
March 25, 2013 05:40 AM - University of Copenhagen - Niels Bohr Institute, via EurekAlert
Scientists from the Nano-Science Center at the Niels Bohr Institut, Denmark and the Ecole Polytechnique Fédérale de Lausanne, Switzerland, have shown that a single nanowire can concentrate the sunlight up to 15 times of the normal sun light intensity. The results are surprising and the potential for developing a new type of highly efficient solar cells is great. Due to some unique physical light absorption properties of nanowires, the limit of how much energy we can utilize from the sun's rays is higher than previous believed. These results demonstrate the great potential of development of nanowire-based solar cells, says PhD Peter Krogstrup on the surprising discovery that is described in the journal Nature Photonics.
Earth Hour 2013 Inspires Many Around the World
March 24, 2013 06:13 AM - WWF
WWF's Earth Hour has just concluded another record sweep around our planet from Samoa on one side of the International Date Line to the Cook Islands on the other, with hundreds of millions again uniting to send a clear message - we are determined to create a sustainable future for our planet. The event was observed in more than 7000 cities, towns and municipalities in more than 150 countries and territories, with many of the world's best known human and natural landmarks going dark as the backdrop to a multitude of "beyond the hour" activities and initiatives generating outcomes for the movement and the planet on which we live. "What is most important is the ever increasing extent to which Earth Hour's supporters are participating in or taking actions themselves," said Earth Hour CEO and Co-Founder, Andy Ridley.
Achieving a Sustainable Food System with Organic Farming
March 22, 2013 10:13 AM - Editor, Worldwatch Institute
Despite a slight decline between 2009 and 2010, since 1999 the global land area farmed organically has expanded more than threefold to 37 million hectares, according to new research conducted by the Worldwatch Institute for its Vital Signs Online service (www.worldwatch.org). Regions with the largest certified organic agricultural land in 2010 were Oceania, including Australia, New Zealand, and Pacific Island nations (12.1 million hectares); Europe (10 million hectares); and Latin America (8.4 million hectares), write report authors Catherine Ward and Laura Reynolds.
Happy World Water Day!
March 22, 2013 08:44 AM - Allison Winter, ENN
All across the globe, communities are celebrating International World Water Day and according the UN's World Water Day website, over 450 events have been planned this year! This year's theme is in part a reflection of the International Year of Water Cooperation. The day is also dedicated to the theme of cooperation that is emphasized concerning using water as a resource. Not only is the environment heavily dependent on water, but as a basic human need, good management of water sources is crucial to our own livelihood. In correlation with this environmental holiday, we are encouraged to promote water cooperation and do our part in protecting one of Earth's most valuable resources as this year marks the 10th anniversary of the celebration that was recommended during the 1992 UN Conference on Environment and Development. So in celebration of today, we are urging our readers to limit your water use!
Climate Change and Giant Sequoias
March 22, 2013 06:06 AM - Bruce Dorminey, Yale Environment360
The world’s largest living species, native to California's Sierra Nevada, faces a two-pronged risk from declining snowpack and rising temperatures. The threat to sequoias mirrors a growing danger to trees worldwide, with some scientists saying rapid warming this century could wipe out many of the planet's old trees. Few living things seem as permanent as the giant sequoia trees of California's Sierra Nevada. The largest species of flora or fauna on Earth, these towering redwood trees have held sway for millions of years in a narrow band of their native mountain habitat. With heights reaching 300 feet and girths as large as 150 feet, some sequoias can live in excess of 3,000 years before being naturally toppled by a combination of weather and gravity.
8 Frogs Discovered in 1 Sanctuary
March 21, 2013 09:06 AM - Jeremy Hance, MONGABAY.COM
Two surveys in the mountainous forests of Sri Lank's Peak Wilderness Sanctuary have uncovered eight new species of frogs, according to a massive new paper in the Journal of Threatened Taxa. While every year over a hundred new amphibians are discovered, eight new discoveries in a single park is especially notable. Sri Lanka is an amphibian-lovers paradise with well over 100 described species, most of which are endemic, i.e. found only on the small island country. Unfortunately the country has also seen more frog extinctions than anywhere else, and seven of the eight new species are already thought to be Critically Endangered.
The Importance of Aircraft Emission in Climate Change
March 21, 2013 06:50 AM - EarthTalk, Global Warming is Real
While air travel today accounts for just three percent of worldwide greenhouse gas emissions, the carbon dioxide (CO2) and other pollutants that come out of jet exhaust contribute disproportionately to increasing surface temperatures below because the warming effect is amplified in the upper atmosphere. The Intergovernmental Panel on Climate Change (IPCC), a scientific intergovernmental body set up by the United Nations (UN) to provide comprehensive scientific assessments of the risk of human-induced climate change, reports that CO2 emitted by jets can survive in the atmosphere for upwards of 100 years, and that its combination with other gas and particulate emissions could have double or four times the warming effect as CO2 emissions alone.Modern jet engines are not that different from automobile engines—both involve internal combustion and burn fossil fuels. But instead of gasoline or diesel, jet fuel is primarily kerosene, a common home heating fuel used around the world. Just like car engines, jets emit CO2, nitrogen oxides, sulfur oxides and soot.