Bryan Hubbell, former head of the air, climate and energy program at the Environmental Protection Agency’s research office. “I knew I wasn’t going to be able to keep doing the work.”

Splashing down in the Pacific Ocean on Saturday near San Diego, the Artemis II mission came to a successful conclusion.

New guidelines issued on Wednesday say that people should consume less alcohol “for better overall health” and “limit alcohol beverages,” but they don’t recommend clear limits.

Lawyers for Rex Heuermann, right, tried to persuade a judge to divide the case into as many as five separate trials.

At least half of the eight new members of a C.D.C. panel, who are meeting for the first time on Wednesday, have expressed some skepticism about vaccines.

“The consortia for H.I.V./AIDS vaccine development and immunology was reviewed by N.I.H. leadership, which does not support it moving forward,” said a senior official at the National Institutes of Health who was not authorized to speak on the matter and asked not to be identified.

Mr. Ley, who fled Germany during the rise of the Nazi party and settled in New York, has a crater on the moon named after him.

Lila Labs