The Environmental Defense Fund and NAFA Fleet Management created the calculator as a first step in developing greener fleets.
BBC World/Harris Polls surveyed 2,123 adults online about air and water pollution and water shortages.
The conference proivdes presentations on current certification issues in water and wastewater.
The group filed a lawsuit in California against retailers and manufacturers for products containing propoxur without proper labeling.
An Environmental Defense Fund report provides case studies that highlight transit innovations across the United States.
A Chicago grand jury found that managers of an Illinois company conspired and schemed to defraud the city on a refuse cart repair contract.
Thomas Hallock received a year's sentence for illegally overfishing striped bass, the Justice Department said.