Interior Secretary Ken Salazar praised the report as an important scientific document on the health of American birds.

VOA: special.2009.05.12

Left behind on the moon were the footprints of Armstrong and Aldrin, an American flag and scientific equipment.

VOA: special.2009.07.15

They worked with American scientists and engineers to develop and test new rockets for military and scientific use.

VOA: special.2009.06.10

The study appeared in the official scientific journal of the American Academy of Physical Medicine.

VOA: special.2010.02.03

Dr.Brook, who chaired group that produced a scientific statement on air pollution and cardiovascular disease for the American Heart Association.

VOA: standard.2010.08.04