Key findings of U.S. Global Change Research Program
¥Global warming is unequivocal and primarily human induced
¥Climate changes are under way in the U.S. and are projected to grow.
¥Widespread climate-related impacts are occurring now and are expected to increase.
¥Climate change will stress water resources.
¥Crop and livestock production will be increasingly challenged.
¥Coastal area are at increasing risk from sea-level rise and storm surge.
¥Threats to human health will increase.
¥Climate change will interact with many social and environmental stresses.
¥Thresholds will be crossed, leading to large changes in climate and ecosystems.
¥Future climate change and its impacts depend on choices made today.