A set of jargon-busting guides that teach children about their rights on social media sites has been published.
Precise "chemical surgery" has been performed on human embryos to remove disease in a world first, Chinese researchers have told the BBC.
The team at Sun Yat-sen University used a technique called base editing to correct a single error out of the three billion "letters" of our genetic code.
They altered lab-made embryos to remove the disease beta-thalassemia. The embryos were not implanted. The team says the approach may one day treat a range of inherited diseases.
Base editing alters the fundamental building blocks of DNA: the four bases adenine, cytosine, guanine and thymine.
They are commonly known by their respective letters, A, C, G and T.
Barack Obama has said he could not hold back tears after dropping off his daughter Malia at university. "It was a little bit like open-heart surgery," the former president said of the moment he took Malia, his eldest daughter, to Harvard University.
"I was proud that I did not cry in front of her," Mr Obama said.
"But on the way back, the Secret Service was off, looking straight ahead, pretending they weren't hearing me as I sniffled and blew my nose."
"It was rough," he added.