The document discusses the results of a study on the impact of climate change on coffee production. Researchers found that suitable land for coffee production could decline by up to 50% by 2050 due to rising temperatures and changing rainfall patterns associated with climate change. Arabica coffee was found to be most at risk, as its growing regions would shrink significantly according to the study's climate models. The results suggest that climate change could severely threaten coffee crops and the livelihoods of millions of farmers in coming decades if greenhouse gas emissions are not reduced substantially.