The Organization for Women in Science for the Developing World (OWSD) supports early-career women scientists in Sub-Saharan Africa and Least Developed Countries (LDCs) with doctoral fellowships in the natural sciences. The applicant must have received her PhD in a scientific discipline within the previous ten years and whose current scientific research is related to the area of water, sanitation, and hygiene. Five grantees receive a cash grant of US$5 thousand and an all-expenses-paid trip to attend a relevant international conference. Applicants should be qualified young women science graduates (generally below 40 years of age), who have an M.Sc. degree or outstanding B.Sc. in the natural sciences. The deadline for submission of applications is 31 August 2025. Details
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International Association of Horticultural Producers — World Green City Awards
The AIPH World Green City Awards competition recognizes the role of city authorities in promoting and supporting greater inclusion of nature and plants in urban environments. The award is open to city governments and local authorities around the world. The submission must be made by the local authority governing the city – such as the Mayor’s or executive officer’s office. Cities receive an award certificate and a trophy, as well as global recognition and profiling opportunities. All entries will need to be submitted online before 15 September 2025. Green City Awards
ETH4D — Visiting Student Grant
The ETH4D Visiting Student Grant provides ETH professors funding to invite a student from a low- or middle-income country to ETH Zurich for a research stay of 3-6 months. The invited student must be registered as a Master’s (MA/MSc) student in their home institution. The grant covers the following expenses up to a maximum of CHF 16.5 thousand. The next application deadline is 15 October 2025. ETH Visiting Student Grant
MDPI — Water Travel Award 2026
MDPI, a publisher of peer-reviewed, open-access journals, invites applications for the 2025 Water Travel Awards. Three awards of CHF 800 each will go to junior scientists to present an oral presentation and/or poster at an international conference in 2026. Applicants must be postdoctoral researchers or Ph.D. students working in the field of water or related areas. Applications have to be submitted by 31 October 2025. Click here
MDPI — Sustainability Young Investigator Award 2025
MDPI, a publisher of peer-reviewed, open-access journals, invites applications and nominations for the Sustainability 2025 Young Investigator Award. The winner will receive CHF 2000. This prize will be given to one young investigator in recognition of their excellence in the field of sustainability and sustainable development. Candidates must be under 35 years and be nominated by senior researchers. The deadline for nominations is 15 December 2025. More information
MDPI — Sustainability Travel Awards 2026
MDPI, a publisher of peer-reviewed, open-access journals, grants travel awards to 5 junior scientists. The award provides financial support to attend an international conference in the field of sustainability and sustainable development, to be held in 2026. Candidates must be postdoctoral fellows or PhD students. The winners will each be awarded CHF 600 and a certificate. Applications have to be submitted by 31 December 2025. Sustainability Travel Awards
AJA Foundation — Water Grants
AJA Foundation supports projects that provide access to clean water. AJA Foundation has a particular commitment to providing renewable clean water in rural African villages. There is no geographical restriction on where projects might be located. Funding ranges from US$2500 to US$500 thousand. The Foundation accepts LOIs on a rolling basis. Details here
Orange Telecom — Tech Entrepreneurship Program
The Orange Summer Challenge 2025 (OSC25) is a tech entrepreneurship program designed to support innovative startups that combine hardware and software solutions with strong social or environmental impact. OSC25 offers participants technical and human support to develop their technological solutions. Winners of the international competition will receive financial support for incubation and other costs related to the development of their solution. Applications are open until 15 June 2025. Know more
Posterheroes — International Contest about Social and Environmental Issues
Submissions are open for the Posterheroes contest that calls for posters about social and environmental issues. Posterheroes invites students, professional designers, and everyone who is into graphic design to create a poster. Participants can win a cash prize of up to US$2,500. The submission deadline is 22 August 2025. Link to the contest
Asia Foundation — Grants for Environment and Development
The Asia Foundation makes grants in a wide variety of program areas, including the Environment. Thematic interests in the environment include natural resource management and use; water resource management and transboundary water sharing; climate change adaptation and resilience; disaster preparedness and risk reduction; urban environmental issues; and women and the environment. The Foundation makes most of its grants to organizations based in the Asia-Pacific region. Letters of inquiry may be submitted at any time. Find details