Black and Hispanic students are harmed by hotter summer temperatures, according to a new study published in the Nature Human Behavior Monday. Across 58 countries, the researchers found that standardized test scores fell for every additional day over 80° Fahrenheit, even controlling for other factors, suggesting a fundamental link between heat exposure and reduced learning. In the United States, however, that detrimental impact only affected Black and Hispanic students. The study is the most recent in a large body of evidence that climate change, caused by burning fossil fuels, disproportionately harms people of color. (New York Times $, E&E $)