Examines sources of energy and other resources in light of their availability, use, environmental impact, as well as their impact on policy, economics and values. As fossil fuels are the dominant energy source today, particular emphasis is placed on climate impacts and the carbon cycle. All material is assessed through the lenses of the physical sciences, policy, ethics and economics. Prereq., a two-course sequence in any natural science. May be repeated up to 6 total credit hours. Same as ENVS 3520. Approved for arts and sciences core curriculum: natural science.