The scientists work for the American space agency and the National Snow and Ice Data Center in Boulder,Colorado.

VOA: special.2009.05.05

She says this study has helped by collecting the data, and now the need is clear to work to better protect children.

VOA: standard.2010.06.29

"There would be an eight-page form, and really other sites have successfully managed to make this work with one page, and that data quality is much better in one page, because it's easier to do.

VOA: standard.2010.02.24