Pollution

COLLEGIATE CORNER: Fossil Fuels vs. Renewable Resources
February 24, 2014 01:07 PM - Flavio Avalos, Class of 2015, Wakefield High School, Arlington, VA

Fossil fuels have been the main source of the energy all over the world. They increase the amount of CO2 emissions, and the emission of CO2 is a great cause of global warming in the atmosphere, destroying the atmospheric layers. What can we do to lower the demand of fossil fuels and become more eco friendly with renewable energy resources? The percent of US transportation sector consumption is 95.4% fossil fuels (Article 3), and this shows the reliance of the US on fossil fuels. As the Institute for Energy states, "Fossil Fuels make modern life possible" and that the only reason that our modern society works and the privileges we get are all due to the fact of fossil fuels (Article 3). Need I remind you: fossil fuels are limited and could go out?

Predicting forest canopy and species displacement
February 20, 2014 03:08 PM - David Orenstein, Brown University

Out of an effort to account for what seemed in airborne images to be unusually large tree growth in a Hawaiian forest, scientists at Brown University and the Carnegie Institution for Science have developed a new mathematical model that predicts how trees compete for space in the canopy.

Just How Clean is Natural Gas?
February 20, 2014 10:23 AM - S.E. Smith, Care2

Just the other day I hopped on a natural gas bus to head to downtown Oakland, enjoying one of the East Bay’s many environmentally-friendly public transit options. But how friendly was that bus to the birds, the bees and the trees?

Obama Moves Ahead to Increase Fuel Efficiency Standards for Heavy-Duty Vehicles
February 19, 2014 08:18 AM - Gina-Marie Cheeseman, Triple Pundit

President Barack Obama is moving ahead to increase fuel efficiency standards. While speaking at a Safeway distribution center in Maryland this week, President Obama cited the advantages of the fuel efficiency standards he put in place for both cars and light-duty vehicles, as well as heavy-duty vehicles.

Fracking residual waters
February 18, 2014 09:40 AM - Robin Blackstone, ENN

As fracking amongst Marcellus Shale in the northeastern part of the United States increases so does the concern over its process. Fracking is done utilizing a hydraulic fracturing process, which pumps a high-pressure mixture of water, chemicals and sand deep into the sedimentary formations to extract naturally occurring gas. The resultant wastewater is then stored in large impoundment ponds and closed container tanks until it can be piped to wastewater treatment plants. Once cleaned it is discharged into local streams or trucked to Ohio to be pumped deep down into another injection well or into another fracking operation.

Predicting the Climate of the future
February 15, 2014 10:44 AM - Roger Greenway, ENN

Climate scientists rely on models to predict how the weather and climate will respond to changes in variable such as CO2 emissions, natural methane emissions, solar intensity and a host of other factors. No individual model can claim to accurately predict future climate. So it is very important to look at multiple models and compare their predictions. The Carnegie Institution for Science is a leader in this area. The pace of global warming over the last century has been about twice as rapid over land than over the oceans and will continue to be more dramatic going forward if emissions are not curbed. According to an analysis of 27 climate models by Carnegie's Chris Field, if we continue along the current emissions trajectory, we are likely facing the most rapid large climate change in the last 65 million years. This will clearly pose great challenges for a variety of terrestrial ecosystems.

Hydrogen Cars to Hit the Road This Spring
February 14, 2014 12:22 PM - CleanTechies Guest Author, Clean Techies

Although electric and plug-in hybrid vehicles have been considered the only plausible alternatives to conventional cars for a long time, and practically all of the world’s biggest car makers have been investing heavily in these technologies, and governments around the world have been trying to promote the use of such vehicles by offering generous incentives and financial benefits to those who choose to buy an alternative fuel vehicle instead of a gasoline-powered car, adoption has been lagging and sales have not been as strong as the auto industry had expected.

Testing for environmental contaminants in wastewater biosolids
February 14, 2014 10:08 AM - Ken Kingery, Duke University

Every year waste treatment facilities in the United States process more than eight million tons of semi-solid sewage called biosolids -- about half of which is recycled into fertilizer and spread on crop land. The practice helps solve storage issues and produces revenue to support the treatment plants, but what else is being spread in that sludge?

More contaminant troubles for West Virginia
February 13, 2014 09:18 AM - Judy Molland, Care2

On February 11, just one month after a chemical spill tainted drinking water for 300,000 people in and around the state's capital of Charleston, West Virginia experienced another environmental disaster: 100,000 gallons of coal slurry pour into stream.

Biodiversity conservationists get a little help with new online freshwater atlas
February 12, 2014 01:00 PM - Richa Malhotra, SciDevNet

An online repository of maps has been launched to make information on freshwater biodiversity available on a common platform for use by scientists, policymakers, conservationists and NGOs. The Global Freshwater Biodiversity Atlas will help developing countries identify biodiversity-rich areas for conservation. It was launched last month (29 January), as part of an EU-funded project called BioFresh, with the aim of putting together published maps and sharing them under a creative commons license.

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