Human experimentation refers to the use of human beings as experimental subjects. A subject is defined as an individual who is observed or experimented with by an investigator; an investigator is a qualified individual who conducts research. Humans...

Human experimentation involves medical experiments performed on human beings. It is an important part of medical research, and many people volunteer for clinical trials of medical treatments. People also volunteer to be subjects for experiments in basic...

The U.S. EPA's new Protections for Subjects in Human Research rule, which came into force on 7 April 2006, was born of a need to tighten the ethical guidelines controlling nonmedical human experimentation. The rule was ostensibly designed to offer people greater protection...

ABSTRACT This is an historical account of experiments that were undertaken to determine the daily amount of vitamin A or carotene (or both) required for health of humans, by deliberately (and in one case accidentally) causing them to become vitamin A deficient. The recommended...

The national intelligence director has won White House approval to begin revising an executive order that lays out each spy agency's responsibilities and the government's protections against spying on Americans.The Reagan-era 1981 presidential order is woven into the culture at the 16 spy agencies and...