Study Abroad - Danish Institute for Study Abroad

http://www.disabroad.org

In particular note their Biotech and Biomedicine program:
http://www.disabroad.org/study-abroad/programs/biotechnology-biomedicine/

This program does a good job of giving science students opportunities to take courses that might apply to their major while still getting a fantastic study abroad experience.

School for Field Studies Study Abroad

http://www.fieldstudies.org

Environmental Field Studies Abroad

SFS creates transformative study abroad experiences through field-based learning and research. Our educational programs explore the human and ecological dimensions of the complex environmental problems faced by our local partners, contributing to sustainable solutions in the places where we live and work. The SFS community is part of a growing network of individuals and institutions committed to environmental stewardship