The STEM education and research environment has been widely described as hostile for many minorities, such as women. While there is not much studies on the subject, the same probably stands for LGBT+ minorities. Using five academic studies, we will try to describe the issues facing LGBT+ students and faculty members in universities and research labs, and in particular, give some answers to the following questions. How being LGBT+ affects the retention rate for students in STEM ? What factors could improve this rate ? How being out to students impact the teaching and the student’s perception for faculty members ? Does being out for a faculty member affect his/her quality of life at work ?