With microscopic human tissues and advanced algorithms, testing new drugs in humans could become more efficient
Some researchers argue testing on primates is both unethical and irrelevant, but vaccine developers and others say it saves human lives — and the pandemic is their latest example
As people and animals clash in India, one researcher is experimenting with wildlife birth control
Chimpanzee research was once done for the benefit of humans. Now, some researchers think it’s essential for saving the great apes.