Watson has repeatedly asserted that differences in average measured IQ between blacks and whites are due to genetics. In early October 2007, he was interviewed by Charlotte Hunt-Grubbe at Cold Spring Harbor Laboratory (CSHL). He discussed his view that Africans are less intelligent than Westerners. Watson said his intention was to promote science, not racism, but some UK venues canceled his appearances, and he canceled the rest of his tour. An editorial in "Nature" said that his remarks were "beyond the pale" but expressed a wish that the tour had not been canceled so that Watson would have had to face his critics in person, encouraging scientific discussion on the matter. Because of the controversy, the Board of Trustees at Cold Spring Harbor Laboratory suspended Watson's administrative responsibilities. Watson issued an apology, then retired at the age of 79 from CSHL from what the lab called "nearly 40 years of distinguished service". Watson attributed his retirement to his age and to circumstances that he could never have anticipated or desired.