The Green Institute offers the Green Fellows program for students passionate about sustainability, food security, climate action, and environmental law. The program consists of a series of four virtual conferences. Participants receive a certificate of participation and stand a chance to win $1000. Participants must be between 18 and 35 years old. The program is open to applicants from all countries. The application deadline is 30 June 2025. Green Fellows Program
worldwide
Organization for Women in Science for the Developing World — OWSD-Elsevier Foundation Awards
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
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 — 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
MDPI — Sustainability Best Paper Award 2025
MDPI, a publisher of peer-reviewed, open-access journals invites applications for the Best Paper Award for research and review articles published in the journal in 2024. Two reviews and two research articles will receive an award each. The prize consists of CHF800. Applications have to be submitted by 28 February 2026. Details
Belmont Forum — Ocean Biodiversity and Ecosystem
The Belmont Forum welcomes transdisciplinary research addressing global ocean challenges. Proposals should focus on at least one of three key areas: Biodiversity Conservation and Nature-Based Solutions; Ocean-Biodiversity-Climate Integration; Nature Futures, Ocean Governance, and Ethics for Sustainability. Projects are expected to last 36 months and involve research consortia with participants from multiple countries and disciplines, including societal partners. All projects should include 3 funding agencies from 3 different countries. Registrations are due 06 March 2026. Ocean call
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
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