Las Villas Central University is located near the city of Santa Clara, at the centre of the country (3 hours from Havana). It is one of the three largest and most important universities in Cuba. Santa Clara is a small and quiet city of about 300.000 inhabitants. It is one of the most important cultural centres in the country, its most important attractions for tourism being the keys along the coast to the north and the Escambray mountains to the south. The city is famous as the site of the last (definitive) battle leading to the triumph of the Cuban revolution, which took place in the last days of December 1958. That battle was conducted by Che Guevara who died some years later (October 1968) fighting in Bolivia. At present his mortal remains lie in a mausoleum in Santa Clara. In May-June months the weather might be wet and temperatures usually range between 23 to 33°C, so light clothes are recommended. In Las Villas Central University, a young team of researchers works on scalar-tensor theories and their connections with geometry and cosmology. They are organizing the present meeting with the advice of several leading scientists in these fields. The aim of this workshop is to encourage the development of research in the fields of gravitation and cosmology in the Caribbean region and beyond. The meeting will focus on the role of scalar fields (moduli, dilaton, inflaton, Jordan-Brans-Dicke, quintessence, tachyons, phantom energy, etc.) in gravity theories, emphasizing their application to cosmology. Concerning cosmology, we welcome the discussion of different models, inspired by unifying theories (like superstring theory) or by scalar-tensor theories, emphasizing models with minimal and non-minimal coupluing as well as tachyonic scalars. Comparison with observations is also of interest. This meeting fulfills and stimulates The IUPAP Policy on the Free Circulation of Scientists.