In partnership with the Elsevier Foundation, TWAS calls for case studies which present issues and challenges for sustainable development through real-life situations. The contest is open to current TWAS and OWSD PhD Fellowship recipients. The categories are green and sustainable chemistry; energy; agriculture and food security; water and sanitation; science education and the workforce; and climate change and disaster and risk reduction. The winner in each category will be awarded US$1 thousand. The deadline for submissions is 01 February 2017. Link