Pollution

A look at N2O: Nitrous oxide emissions may be higher than previously thought
June 22, 2015 05:01 PM - Helmholtz Centre for Ocean Research Kiel

In addition to carbon dioxide there are plenty of other greenhouse gases. Nitrous oxide is one of them. However, a global assessment of emissions from the oceans is difficult because the measurement methods used so far have only allowed rough estimates. Using a new technology for continuous measurements, researchers of the GEOMAR Helmholtz Centre for Ocean Research Kiel and the Christian-Albrechts-Universität zu Kiel have now discovered that nitrous oxide emissions from the Southeast Pacific are much higher than previously thought. They publish their data in the international journal Nature Gesoscience.

Why are some states reducing EV incentives?
June 7, 2015 07:33 AM - BOB SHETH, Electric Forum, Electric Forum

First of all we have to say that the vast majority of US state authorities are continuing with their current electric vehicle financial incentives, with many actually increasing the amount of funds available, but some states are struggling. Connecticut, Georgia, and Illinois are just three states in the US where electric vehicle financial incentives are being tapered down. Whether or not they are reintroduced in the future remains to be seen but budgets need to be balanced.

Is this a reflection of the technology?

It would be easy to say that we are yet again looking at a false dawn for the electric vehicle sector but this would be wrong. There has been enormous government and corporate investment in the industry and it is inconceivable to even suggest it will fade away into the background as it has done before. The simple fact is that many states across the US, and governments around the world, are struggling to balance their books during the current tight economic environment and schemes such as financial incentives to switch to electric vehicles are feeling the brunt.

Lower Ozone levels in Houston linked to climate change
May 17, 2015 07:48 AM - Universtiy of Houston via ScienceDaily

Researchers at the University of Houston have determined that climate change -- in the form of a stronger sea breeze, the result of warmer soil temperatures -- contributed to the drop in high-ozone days in the Houston area.

Robert Talbot, professor of atmospheric chemistry, said that also should be true for coastal regions globally.

The researchers describe their findings in a paper published this week in the journal Atmosphere. In addition to Talbot, they include first author Lei Liu, a doctoral student, and post-doctoral fellow Xin Lan.

Five Years and Counting: Gulf Wildlife in the Aftermath of the Deepwater Horizon Disaster
April 17, 2015 09:37 AM - National Wildlife Federation

Five years after the Deepwater Horizon rig exploded, sending oil into the Gulf of Mexico for 87 days, wildlife are still struggling. The Gulf, with its deep waters, sandy beaches, lush wetlands and coral reefs, is a vast system that supports more than 15,000 species of wildlife – fish, birds, marine mammals and many, many others.

A new report from the National Wildlife Federation looks at how 20 types of wildlife that depend on a healthy Gulf are faring in the wake of the BP oil spill. The full extent of the spill’s impacts may take years or even decades to unfold, but Five Years & Counting: Gulf Wildlife in the Aftermath of the Deepwater Horizon Disaster examines what the science tells us so far.

Lifecycle of Today's Cell Phone
April 7, 2015 08:57 AM - ClickGreen Staff, ClickGreen

It is estimated that in 2014 over two billion mobile phones were sold worldwide. Of these, over one billion were estimated to be smartphones. It is also estimated that a massive 87% of the world’s population now use mobile phones. These are staggering figures, but how many of us have ever stopped to think of where our precious mobile phones came from and what happens to them once we discard them for a newer model?

Each year millions of mobile phones are produced in the world and an equal number are disposed of. In the vast majority of cases these discarded phones work perfectly well. However, like all technological products these days, phones have a built-in technological obsolescence (we demand the latest model or the latest upgrade) as well as a built in aesthetic obsolescence (we demand the latest style or design).

In spite of their extremely small size and simplicity of look, mobile phones are immensely complex pieces of technology with many, many components. If we stop to think about it for a moment all of these products need sourcing: the raw materials needed to produce them need extracting from the ground, these need to manufactured into working parts which are then assembled into the final phone.

ENN Releases App for Android Users
February 23, 2015 09:14 AM - ENN Editor

Last month ENN launched a new mobile app available at the iTunes store making it easier for you to connect with us and stay up to date with groundbreaking environmental news. Now, ENN releases the mobile app at Google Play, making it compatible for Android users.

ENN is more than just a gatherer of environmental news but rather a unique set of resources, archives, tools, and experts for the increasingly complex field of environmental science attracting readers from all levels of government, business and academia.

We also encourage you to join the conversation by checking out our Community Blog and by connecting with us on Facebook.

Apple users can download the app at the iTunes store.

Android users can download the app at Google Play.

Make sure you click on the app with the logo shown here.

Salting Roads takes a Toll on the Environment
January 14, 2015 10:49 AM - Kevin Mathews, Care2

The United States has a salt problem, and it extends well beyond the excessive sodium we consume in our diets. In the winter months, municipalities rely on dumping salt on the roads to minimize the effects of ice. Altogether, the U.S. uses ten times the amount of salt on roadways than it does in the processed foods we consume. While the salt may help to keep drivers safe, it does come at a cost:

1. It Increases Our Own Salt Consumption

You can throw salt down on roads, but you can’t force it to stay there. In due time, salt makes its ways into nearby waterways where it lingers. As a result, a lot of the water we wind up drinking has higher levels of salt than it would otherwise. Vox cites a study that finds 84% of city-adjacent streams have higher levels of chloride thanks specifically to these road-salting techniques. Apparently, during the months following salted roads, 29% of these streams have more salt than the federal “safety limits” for drinking water allow.

Pharmaceuticals and Personal Care Products Could Taint Pools
January 6, 2015 01:01 PM - Purdue University

A new study suggests pharmaceuticals and chemicals from personal care products end up in swimming pools, possibly interacting with chlorine to produce disinfection byproducts with unknown properties and health effects. Chlorination is used primarily to prevent pathogenic microorganisms from growing. Previous research has shown that many constituents of urine including urea, uric acid, and amino acids, interact with chlorine to produce potentially hazardous disinfection byproducts in swimming pools. However, chemicals from pharmaceuticals and personal care products, or PPCPs, also could be interacting with chlorine, producing potentially harmful byproducts. 

California's regulations on diesel trucks are having a positive impact on air pollution
January 3, 2015 08:42 AM - Lawrence Berkeley National Laboratory via ScienceDaily.

Ever wonder what's in the black cloud that emits from some semi trucks that you pass on the freeway? Lawrence Berkeley National Laboratory (Berkeley Lab) scientist Thomas Kirchstetter knows very precisely what's in there, having conducted detailed measurements of thousands of heavy-duty trucks over months at a time at two San Francisco Bay Area locations.

”‹With a specially outfitted research van equipped with sophisticated monitors for several pollutant types, he and his team are studying emissions levels from diesel trucks to understand and analyze the impact of new control technologies and California air pollution regulations.

Carbon Dioxide Threat To Mussels' Shells
December 24, 2014 01:09 PM - The Ecologist, The Ecologist

The world's mussel population could be under threat as rising CO2 levels in atmosphere and oceans makes their shells weaker and more brittle shells - making them more vulnerable to stormy seas, and predation.

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