Humans aren't the only species that can pretend, a study shows. Scientists offered a bonobo imaginary juice and grapes in a ...

Human experimentation made many modern medical advances possible—but history shows what happens when ethics are ignored. Across wars, regimes, and institutions, people were subjected to cruel and ...

Experiments on animals (“in vivo” experiments) have long been the norm for learning about human health and disease, because testing on live animals enables researchers to investigate how chemicals, ...