#  Introductory Courses 

 



**1 half-course chosen from:**

 [ESPP 11](http://www.registrar.fas.harvard.edu/courses-exams/courses-instruction/environmental-science-and-public-policy). Sustainable Development  
 [EPS 22](http://www.registrar.fas.harvard.edu/courses-exams/courses-instruction/earth-and-planetary-sciences). The Fluid Earth: Oceans, Atmosphere, Climate, and Environment  
 [SLS 22](http://www.registrar.fas.harvard.edu/courses-exams/courses-instruction/science-living-systems). Human Influence on Life in the Sea  
 [SLS 25](http://www.registrar.fas.harvard.edu/courses-exams/courses-instruction/science-living-systems). Trees, Forests and Global Change  
 [SPU 25](http://www.registrar.fas.harvard.edu/courses-exams/courses-instruction/science-physical-universe). Energy: Perspectives, Problems, and Prospects  
 [SPU 29](http://www.registrar.fas.harvard.edu/courses-exams/courses-instruction/science-physical-universe). The Climate-Energy Challenge   
 [SPU 31](http://www.registrar.fas.harvard.edu/courses-exams/courses-instruction/science-physical-universe). Energy Resources and the Environment