COST is the longest-running European framework supporting transnational cooperation among researchers, engineers and scholars representing various areas of science and technology across Europe. Annually COST announces a call for actions, which usually are implemented in the period of four years. The scientists can also join implementation of the COST actions already under implementation by submitting an application to the Republic of Latvia State Education Development Agency. Application for a new COST action can be prepared and submitted by scientists and specialists who represent at least five COST Member States.