fluoridation

John Batchelor kicked things off with a personal anecdote -- as a child in the 1950s, cavities were common for him, but his children, born in the 1990s, had virtually none. He asked why this shift.

In a contentious age when public health debates often resemble cultural battlegrounds, the nomination of Robert F. Kennedy Jr. as Secretary of Health and Human Services has reignited old controversies.