Robert F. Kennedy Jr. likes to hold himself up as an environmentalist and, as a former senior attorney at the Natural Resources Defense Council, he once really was one. But those who know him say he has changed into somebody they no longer recognize. For example, Gina McCarthy, Obama’s EPA administrator, NRDC president during the Trump administration and now President Biden’s climate adviser, was quoted by The New York Times as saying, “If folks remember him as an environmentalist, he is no more … He’s against science, he’s against vaccines, he talks jibber jabber on climate.