The Younger Dryas impact hypothesis (YDIH) featured on the New York Times Magazine this week. The Comet Strike Theory That Just Won’t Die - The New York Times (nytimes.com) The article is well balanced, giving both sides of the story. The most interesting thing I learned was that Mark Boslough, long-time antagonist of the YDIH, has tried to end research into the YDIH. Apparently, and this is confirmed by those who should know, he wrote to all the editors of journals that ever have published pro-YDIH papers, lobbying them to retract those papers. I don't know of any scientist that would even think of doing this, yet alone actually carry it out. While it is quite normal to seek a retraction if there is good evidence of some kind of scientific malpractice, such as plagiarism or tampered results, it is not ethical to seek a retraction because you disagree with the science or if requests for samples have been denied. This is because writing to all the editors could bias the scientifi