Bridge of Recycled Plastic Helps the Army Go Green

The world’s first thermoplastic composite (recycled plastic) bridge has been constructed in Richmond County, NC.  The bridge is made of recycled plastic (except for bolts and some metal plates) and can withstand loads exceeding 70 tons.

Climate Change Increases Runoff In Eastern U.S. Forests

Changes to our ecosystem caused by global warming may increase stormwater runoff.  Models that account for changes in soil nitrogen and ozone exposure show increased runoff from 3-6%, by lowering a plants ability to photosynthesize and transpire.

Changes in Nutrient and Sediment Concentrations in Streams and Rivers of the United States, 1993-2003

A report issued by the U. S. Geological Survey’s National Water Quality Assessment Program states that phosphorus and nitrogen concentrations have stayed relatively stable in half of the assessed streams between 1993 and 2003.  However, some streams in the Mississippi/Atchafalaya River Basin showed an increase in phosphorus.  The link below provides information on the report in addition to maps and detailed assessments on water quality.

http://water.usgs.gov/nawqa/pubs/nutrient_trends/

Increased Flooding Risk:  Global Warming’s Wake-Up Call for Riverfront Communities

A new report issued by the National Wildlife Federation states that the United States is experiencing more heavy storms and more severe flooding lately, mostly due to global warming and poor management practices.  The report explains the link between global warming and the changes in precipitation.

Flexing the Infiltration Muscle: What’s the Role of ET?

Most states consider infiltration as the ultimate solution for stormwater management, since it reduces stormwater runoff, filters the water through the soil and recharges the groundwater table.  However, there is very little discussion on evapotranspiration (ET), which is another natural process that usually works in conjunction with infiltration.  ET is the process of plants releasing water through their leaves. 

Scientists Zoom in On Carbon Dioxide in NYC

Wade McGillis has set up seven sensors around New York City to record data about carbon dioxide.  The sensors provide information about how carbon dioxide changes throughout the day and how different locations affect the outcomes.  The sensors record data such as carbon dioxide levels, wind speed, and weather changes every 15 minutes.

PA DEP Releases Climate Change Assessment Report:  Examines How Potential Climate Changes Could Impact Pennsylvania

This report issued by the PA DEP identifies possible impacts from global warming.  The report states that temperatures and precipitation will likely increase over time, impacting human health, crop productions, wildlife and increased energy costs. 

http://www.ahs2.dep.state.pa.us/newsreleases/default.asp?ID=5570
To view the report visit http://www.elibrary.dep.state.pa.us/dsweb/Get/Document-75375/7000-BK-DEP4252.pdf

Researchers Find Way to Make Nearly Carbon-Free Rice Husk Ash for Concrete

A new way to process rice husks allows them to be used in concrete as a partial substitute for Portland cement, limiting carbon emissions.  Replacing 20% of the cement makes the concrete stronger and more resistant to corrosion. 

EPA Releases National Air Toxics Assessment (NATA) Report

In June 2009, EPA released the most recent NATA Report, a national scale assessment of air toxics emissions.  This assessment identifies and prioritizes air toxics, sources, and locations of concern.  The main priorities were to create a list of toxics, estimate concentrations around the United States, estimate human exposure, and evaluate potential public health risks.

http://www.epa.gov/nata/

A Key to Healthy and Eco-Friendly Wastewater Lagoon Systems

This article features eco-friendly ways to improve wastewater lagoons.  Windmills can be utilized to generate clean energy to power lagoon aerators, improving water quality and reducing odors.  Aeration is important for the health of a lagoon, to keep the water mixed and in suspension.