Benjamin Mueller

A 1-year-old died and three other children fell ill at a New York day care, and the authorities blamed opioids. Children are significantly more vulnerable to drugs because of their small bodies.

A 1-year-old boy died and three other children were hospitalized on Friday after showing signs of drug exposure at the day care, officials said.

Two episodes, where the Republican senator froze and did not respond to some questions, may be symptoms of a serious illness, according to neurologists not involved in his medical care.

The brief statement came from the attending physician of Congress, who said he had reached the conclusion after consulting with the top Republican’s doctors and didn’t say he had examined the senator.

The Louisiana Republican said he had been diagnosed with multiple myeloma, but would return to Washington to continue working as he undergoes treatment.

The drug Wegovy eased issues for people with a type of heart problem, adding to the treatment’s benefits beyond weight loss.

A clinical trial was the first to demonstrate that a new obesity drug could also improve patients’ heart health.

An expert panel found fault, but not misconduct, in several neuroscience papers by Marc Tessier-Lavigne. Here are the details.

Marc Tessier-Lavigne was cleared of accusations of scientific fraud and misconduct. But the review said his work had “multiple problems” and “fell below customary standards of scientific rigor.”

Two virologists testified that they remained convinced that the coronavirus was natural in origin and said Dr. Anthony S. Fauci did not exert influence over a study they wrote.