David Cyranoski

Japan has turned regenerative medicine into a regulatory free-for-all. Patients across the world could pay the price.

Genetically identical primates offer the best models of human disease, but raise ethical issues.

Following last year’s bombshell revelation, investigations mount and debates swirl about the future for gene-edited humans. Here are the four most pressing questions.

If approval comes before clinical trials end, this could complicate the study of vaccines’ long-term effects