The promise of Waterless Dyeing
June 13, 2014 07:56 AM - Lydia Heida, Yale Environment360
One of the world's most polluting industries is the textile-dyeing sector, which in China and other Asian nations releases trillions of liters of chemically tainted wastewater. But new waterless dyeing technologies, if adopted on a large scale, could sharply cut pollution from the clothing industry. Each year, one global industry gulps down trillions of liters of fresh water, together with massive amounts of chemicals. The wastewater from that industry is then dumped, often untreated, into rivers that bring its toxic content to the sea, where it spreads around the globe.
Wasted heat from air conditioners causes warmer nighttime temperatures
June 12, 2014 08:01 AM - Allison Winter, ENN
With summer temperatures fast approaching, households across the country are installing and prepping air conditioning units in anticipation of hot, sticky weather. However, a potentially brutal cycle may be in store if summertime extreme-heat days are projected to become more frequent and intense as a result of climate change. According to a new study conducted in Phoenix by Arizona State University researchers, so much wasted heat is emitted by air conditioning units that it actually raises the city's outdoor temperature at night by 1-2.7 degrees! Consequently, these warmer temperatures may encourage individuals to further their demands and energy use of their air conditioners. The research, published last month in the Journal of Geophysical Research, investigates the effects of air-conditioning systems on air temperature and examines their electricity consumption for a semiarid urban environment.
How herring populations are affected by commercial fisheries
June 10, 2014 09:21 AM - Nicholas Barrett, MONGABAY.COM
Scientists analyzed almost half a million fish bones to shed light on the population history of Pacific herring (Clupea pallasii) in the North Pacific Ocean. Their paper, published in the journal Proceedings of the National Academy of Sciences (PNAS) reveals a decline of unprecedented scale. It suggests that while the abundance of Pacific herring does fluctuate naturally, their numbers have fallen precipitously since commercial fishing started targeting the species in the 19th century.
In cutting deforestation, Brazil leads world in reducing emissions
June 9, 2014 08:53 AM - Rhett A. Butler, MONGABAY.COM
Brazil's success in reducing deforestation in the world's largest rainforest has been much heralded, but progress may stall unless farmers, ranchers and other land users in the region are provided incentives to further improve the environmental sustainability of their operations, argues a study published this week in the journal Science.
EU reacts to Obama's Clean Power Plan
June 3, 2014 10:11 AM - Editor, ENN
After the US EPA announced their plan to cut US power plant emissions 30% by 2030, the European Union (EU) reacts, praising the Emission Performance Standard (EPS) for its vision while serving as a "positive signal" to other countries. "This proposed rule is the strongest action ever taken by the U.S. government to fight climate change," the EU's climate action commissioner, Connie Hedegaard said in a reaction statement. "If implemented as planned, this measure will help the country meet its 2020 emissions target."
US EPA Releases Clean Power Plan Proposal
June 2, 2014 01:27 PM - Editor, ENN
The U.S. Environmental Protection Agency is releasing the Clean Power Plan proposal today. This is the first attempt to cut carbon pollution from existing power plants, the single largest source of carbon pollution in the United States. According to the EPA, power plants account for roughly one-third of all domestic greenhouse gas emissions in the United States. While there are already standards for the level of arsenic, mercury, sulfur dioxide, nitrogen oxides, and particle pollution that power plants can emit, there are currently no national limits on carbon pollution levels.
British Airways Turns Garbage into Jet Fuel: Sustainable Solution or Incineration in Disguise?
May 30, 2014 02:03 PM - Alexis Petru, Triple Pundit
Can garbage power your plane ride from New York to London? That’s the idea behind a new production plant that will transform waste from London's homes and businesses into a jet fuel that costs about the same price as conventional petroleum-based fuel but burns cleaner and produces fewer carbon emissions.
Rules to cut carbon emissions also reduce harmful air pollution
May 28, 2014 08:58 AM - ClickGreen Staff, ClickGreen
Setting strong standards for climate-changing carbon emissions from power stations would provide the added bonus of reducing other air pollutants that can make people sick and damage the environment. A first-of-its-kind study released today by scientists at Syracuse University and Harvard has mapped the potential environmental and human health benefits of power plant carbon standards and found potential for reductions of more than 750 thousand tons of other harmful air pollutants across the US.
EPA doles out grants to replace old diesel engines on tug boats
May 27, 2014 03:17 PM - Allison Winter, ENN
The shipping industry is one of the most under-regulated industries in the world due to outdated and international regulations that are difficult to enforce on a global scale. And as these ships enter our harbors and ports close to home, their operations have the potential to generate smog-forming emissions and other pollutants that are linked to various health problems in susceptible populations. In an effort to combat some of the pollution expelled from dirty diesel engines, the U.S. Environmental Protection Agency has allotted over one million dollars to help two specific organizations replace their old engines with less polluting models. According to the EPA, the projects will cut emissions of harmful nitrogen oxides and particulate matter among other pollutants which are linked to asthma, lung and heart disease and premature death.
Why don't building owners install modern controls?
May 24, 2014 08:08 AM - Roger Greenway, ENN
Commercial buildings use large amounts of electricity and natural gas. Significant reductions in energy use can be achieved by installing new modern systems but this requires a significant capital cost, It is possible to install modern control systems at much lower cost and these can also significantly reduce energy use, and improve comfort at the same time! A new study by the Pacific Northwest National Laboratory shows that commercial buildings could cut their heating and cooling electricity use by an average of 57 percent with advanced energy-efficiency controls, according to a year-long trial of the controls at malls, grocery stores and other buildings across the country. The study demonstrated higher energy savings than what was predicted in earlier computer simulations by the same researchers.