The system helps fleet owners increase the time between oil changes.
The nine hazardous wastes sites are located in seven states, and an additional 13 sites in 12 states are being considered for the National Priorities List.
DeWALT, a power tool manufacturer, will give a discount on purchases to those who recycle power tool batteries at its service center.
More than $1.6 million has been awarded to Duke University, Resources for the Future, and the World Resources Institute to study designs for a cap-and-trade system.
The U.S. Environmental Protection Agency issued a proposed finding that six greenhouse gases pose a potential threat to public health or welfare.