Health Secretary Robert F. Kennedy Jr. apparently embraces the outdated "miasma theory" of disease instead of the widely accept "germ theory" of disease, which may help explain some of the actions he's been taking.

Rob Lucero says he wants to fill a leadership vacuum that he says both the Democratic and Republican parties are experiencing.

Bill Nye the Science Guy once had to block Health Secretary RFK Jr. after he sent “miles and miles” of anti-vaccination texts to his phone, he recalled in a recent interview.

The Department of Health and Human Services sent Congress a document to support Secretary Robert F. Kennedy Jr.’s decision to change federal vaccine recommendations that cited unpublished or disputed studies and misrepresented other findings,

The consists of scientists, public-health experts and physicians, including one criticized for spreading COVID-19 misinformation, conspiracy theories.

Some public health experts have expressed optimism that RFK Jr.'s picks to lead the Advisory Committee on Immunization Practices might decrease vaccine hesitancy.

Bill Nye the Science Guy says he had to cut ties with Robert F. Kennedy Jr. after receiving endless text messages about autism and vaccines.

Public health experts said healthy children also at risk of severe disease and death from COVID amid RFK Jr.'s announcement of new CDC COVID vaccine recommendations. ABC News’ Linsey Davis spoke ...

Three of the health secretary’s picks to replace fired members of an influential panel that sets U.S. vaccine policies have filed statements in court flagging concerns about vaccines.

The CIA has released 1,500 pages of previously classified documents relating to the assassination of New York Sen. Robert F. Kennedy.