Sixty years ago, when these cycles of death and destruction were first being discovered by scientists, it was legitimate to be concerned about whether they were unnatural. But there is now abundant evidence, almost totally ignored by the International Union for Conservation of Nature, that the reef is fine. The coral always recovers vigorously after major mortality events. Coral remains abundant on all 3000 reefs. The amount of coral, while fluctuating dramatically from year to year, is about the same today as when records began in the 1980s. The coral growth rates have not declined — if anything they have increased, as would be expected from the slight increase in temperature over the past century. Corals like it hot and grow faster in warmer water.