sentences:  Tetra Pak supplies the cartons for the school milk at cost and does not make any profit on sales.UNDP and World Bank case studies of Tetra Pak school milk programmes in Nigeria showed that vitamin deficiency, energy, growth and cognitive skills were improved and that children were more interested in their school work after taking part in the programme.Tetra Pak has supported disaster relief—e.g., after the Haiti earthquake, Pakistan floods, and Russian wildfires in 2010, and Japan's Tōhoku earthquake and tsunami and Thailand floods in 2011, and during the 2010 Pakistan floods and Thailand in 2011.