Hawaiian corals have been subject to increasing heat stress and more prevalent bleaching events since the first major bleaching event in 1996. “However, our results also provide some surprising hope that Hawaiian corals may be able to adapt to increasing temperatures.” Researchers used high-resolution modeling that includes small-scale processes to examine projected heat stress on coral reefs during the 21st century. They compared this heat stress to previous estimates of the rate at which corals might adapt to changing conditions. This study provides projected heat stress not just for the region as a whole but examines differences around and between individual islands.