The National Academy of Engineering is offering the Grainger Challenge Prize, $1 million to the individual or individuals - from a for-profit, nonprofit, government, or private institution-who design(s) and create(s) a workable, sustainable, economical, point-of-use water treatement systemf or arsenic-contaminated groundwater in developing countries.

For more information: www.graingerchallenge.org

Biomaterials and microbiologists may be able to work together to design a project to study this.