As part of the research project, nine farmers were given materials and trained how to build and use a hoop house.

VOA: special.2009.12.22

Medical historians say the death of Clara Maass also created a public protest over the use of humans in yellow fever research.

VOA: special.2010.05.18

Besides its ethical objections, PCRM argues that the use of chimpanzees in the lab is an ineffective way to advance medical research.

VOA: standard.2010.02.16

But the legislation is not to everyone's liking. John VandeBerg, director of the Southwest National Primate Research Center in San Antonio,Texas, says the use of chimpanzees in biomedical research is essential.

VOA: standard.2010.02.16