Abajo una convocatoria que podría ser de interés:

The University Alliance for Sustainability is offering exchange schemes for study and research stays at the four partner universities under the thematic framework of "Science and Sustainability", to be completed throughout 2018. The mobility program offers the opportunity of a research stay abroad to academics at all levels, from students to leading scientists, as well as to university administrators, engaging people from across university strata in dialogue about sustainable development. A Sustainability Volunteer Swap is also offered for exchange between student-led initiatives.
 
The application deadline for interested participants from Freie Universität is January 15, 2018.

For more detailed information see here the Call for Applications.