环境科学硕士（MESc）和森林科学硕士（MFS）课程是为希望进行有助于基础知识和应用知识的科学研究的学生而设计的。MFS学位课程适用于希望从事与森林有关的主题的学生，而MESc学位课程适用于希望从事与非森林相关的环境问题的学生。这些科学学位旨在为学生提供比学校管理学位更深的学科重点，同时保持学校的核心价值，即应允许学生灵活选择课程以实现其教育目标。学习课程包括科学哲学和实践方面的正规培训。通过重点课程与扩展研究相结合提供培训。该学位所需的科学研究将与F＆ES教职员工研究顾问密切合作。顾问的选择将在申请过程
The Master of Environmental Science and Master of Forest Science programs are designed for students wishing to conduct scientific research that contributes basic and applied knowledge. These highly individualized two-year degrees offer a deeper disciplinary focus on forest-related topics (MFS) or other environmental issues (MESc) through formalized training in the philosophy and practice of science. Training is provided through key courses in combination with extended research. Students in the MFS/MESc programs have the opportunity to develop critical research skills, pursue self-directed research, learn and practice grant-seeking strategies, and create a publication-ready master's thesis to be presented to the broader Yale community.