Forest ecosystems evolve slowly in response to gradual natural climate cycles. The rapid pace of global climate change resulting from combustion of fossil fuels and other industrial and agricultural activities disrupts such gradual adjustments. Many tree species may be unable to survive at their present sites due to higher temperatures. Increased drought, more pests and disease attacks, and higher frequency of forest fires, are all projected to occur at spots throughout the globe. Agriculture depends on rainfall, which impacts how to manage crop production, the types of seeds planted, and investments in irrigation systems. Changing weather patterns associated with changing global climate patterns pose major challenges for the farmers, small and large, who feed the world’s growing population. Just as forest ecosystems face the stress of loss of traditional habitat, so will the world’s farming community.