Microplastics really are a public health emergency. But instead of talking about his signature issue, he’s babbling about ...

Kennedy Jr., an ardent vaccine critic who would have been Weldon’s boss as health secretary. Perhaps Weldon’s biggest problem ...

Robert F. Kennedy Jr.’s failure to install a fellow vaccine critic to a key government post is testing the limits of how far the US health secretary can go to promote his public-health agenda.

Karoline Leavitt has been under scrutiny for her remarks about President Donald Trump’s tariffs, which she described as a ...