Human systems are interconnected. Built infrastructure such as drinking and wastewater systems can severely impact public health when damaged. Transportation systems such as roads and subways enable people to get to work and drive economic growth, and also enable food to be transported across the country. Energy grids are likewise essential both for economic growth and for general health and safety.
Climate change is increasingly impacting these systems through sea level rise, extreme weather, changes in the range of disease vectors and crop pests, and other impacts that cascade across defined sectors or categories. Scientists and policymakers are working to measure the impacts, and plan for the future both through adaptation and mitigation of future climate change.