They also will study chemical and physical properties of the soil samples with a method called infrared spectroscopy.

VOA: special.2009.01.20

The chip removed ninety-nine percent of the salt and other harmful substances from water samples.

VOA: special.2010.04.05

Researchers from the African Soil Information Service will study earth samples and rate them.

VOA: special.2009.01.20

Samples of dung will also be gathered, photographs taken, and acoustic instruments will record the animals' distinctive calls.

VOA: standard.2010.01.05

Following the study, Puerto Ricans from across the island and many living on the mainland had their DNA tested by submitting samples of their saliva.

VOA: standard.2010.04.05