CHAPEL HILL, N.C. — There has been controversy about whether life originated in a hot or cold environment, and about whether enough time has elapsed for life to have evolved to its present complexity.
But new research at the University of North C…
If medical scientists sometimes find it hard to recruit enough volunteers — especially blacks — to participate in research studies, there may be a good reason, a new University of North Carolina at Chapel Hill study shows. A surprisingly high percentage of Americans asked — almost 80 percent of blacks and 52 percent of whites — were suspicious that they might be used as “guinea pigs” without their consent