R.F.K. Jr.’s Environmental Colleagues Urge Him to Drop Presidential Bid

As an independent candidate for the White House, Robert F. Kennedy Jr., claims he would be the “best environment president in American history,” drawing on his past as a crusading lawyer who went after polluters in New York.But dozens of Mr. Kennedy’s former colleagues at the Natural Resources Defense Council are calling on him to withdraw from the race, in full-page advertisements sponsored by the group’s…