Can ‘Chemical Surgery’ Prevent Disease?

In a world first, a team of Chinese researchers have performed precise ‘chemical surgery’ on human embryos to prevent disease. But is it safe?

Also in the programme: A UN visit to Myanmar’s Rakhine State has been postponed by the Burmese government due to "bad weather"; and Hugh Hefner, the American founder of Playboy magazine, has died at the age of 91.

(Picture: Embryo Research. Credit: Getty Images)