Studying embryos beyond 14 days? Not so fast, says one key U.K. expert

LONDON—It’s a looming question facing biologists, ethicists, and society as a whole: Should scientists be allowed to study embryos cultured in the lab beyond 14 days after fertilization? Perhaps in the future, but not just yet, one highly influential voice said at a meeting here today.

“It’s too soon,” said philosopher Mary Warnock, who chaired a committee in the 1980s that informed current regulations. &ldqu ... Read more »