Dr. José Baselga, the hospital’s chief medical officer, stepped down days after a report by ProPublica and the New York Times that he failed to disclose millions of dollars in payments from the health care and drug industry in research articles.

Happy 10 Minutes, a Chinese government campaign that encouraged schoolchildren to exercise for 10 minutes a day, would seem a laudable step toward improving public health in a nation struggling with alarming rates of childhood obesity.

But the initiative and other official Chinese efforts that emphasized exercise as the best way to lose weight were notable for what they didn’t mention: the importance of cutting back on the calorie-laden junk foods and sugary beverages that have become ubiquitous in the world’s second largest economy.

Six months after halting a study of moderate drinking that was underwritten by donations from the alcohol industry, the National Institutes of Health outlined a series of steps to prevent similar conflicts of interest and to safeguard the integrity of its research and its reputation.

In a report issued on Thursday, N.I.H. officials said its 27 institutes must evaluate all current research projects that receive private donor support for conflicts of interest of the kind that compromised the alcohol trial. The institute directors are to report their findings to Dr. Francis Collins, director of N.I.H., early next year.

Last month’s announcement claiming the birth of the world’s first genome-edited babies has sparked a furore over how to regulate this cutting-edge technology (see Nature 563, 607–608; 2018, and Nature564, 5; 2018). In our view, piling up scientist-led conferences modelled on Asilomar in 1975 (see Nature 526, 293–294; 2015) without any clear consensus is futile.

The Sarah Cannon Research Institute, based in Nashville, received nearly $8 million in payments from drug companies on behalf of its president for clinical operations, Dr. Howard Burris, largely for research work. Dozens of his articles published in prestigious medical journals did not include the required disclosures of those payments and relationships.

A Chinese scientist recently claimed he had produced the world’s first gene-edited babies, setting off a global firestorm. If true — the scientist has not yet published data that would confirm it — his actions would be a sensational breach of international scientific conventions. Although gene editing holds promise to potentially correct dangerous disease-causing mutations and treat some medical conditions, there are many safety and ethical concerns about editing human embryos.

Here are answers to some of the numerous questions swirling around this development.

On the one hand, reports of a rogue scientist, He Jiankui, who contravened the scientific and ethical norms that should guide the development of human genome editing reinforces the need for clarity about those norms and international monitoring of advances in the field. On the other hand, it shows the weaknesses and limitations of voluntary efforts – like the summit – to guide scientists’ practices. They lack any real enforcement power on their own, and have largely served to ensure that human genome editing research can continue, rather than promote reflection on whether we should edit the human germline in the first place.

Under pressure to curb vaping among young people, the tobacco giant Altria announced on Thursday that it would discontinue most of its flavored e-cigarettes and stop selling some brands altogether.

California’s insurance regulator is suing AbbVie Inc., alleging that the pharmaceutical giant gave illegal kickbacks to health-care providers in order to keep patients on its blockbuster rheumatoid arthritis drug Humira.