The document discusses the results of a study on the impacts of climate change on global agriculture. The study found that rising temperatures will reduce global yields of maize, wheat, rice, and soybeans by the end of the century. Crop yields are projected to decrease by 7-10% for each 1°C increase in local growing season temperatures above 29°C. The impacts will not be evenly distributed and will depend on geography, with tropical regions experiencing the greatest losses.