New power sources needed for soldier of the future

The U.S. Army should investigate alternative power sources, such as fuel cells and small engines, to create longer-lasting, lighter, cheaper, and more reliable sources of energy for the equipment soldiers will use in the future, says a new report from the National Academies' National Research Council. In addition, the Army should step up its efforts to develop and acquire technologies that are more energy-efficient, said the committee that wrote the report.