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
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NDN Collective — Community Self-Determination
The Community Self-Determination grant program invests in the self-determination of Indigenous people working in their community. Applicants are encouraged to describe their community self-determination efforts within one of the following strategic focus areas that are best suited for their intentions and goals (e.g., climate justice work, clean energy initiatives, access to clean water, etc.). Grants of US$20 thousand per year, with a commitment of two years. The geographical focus is Turtle Island (Island Nations of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the U.S. Virgin Islands, as well as Canada and Mexico). Applications close on 17 October 2025. Community Action Fund
MDPI — Climate Travel Awards 2026
The Climate Editorial Board offers travel awards to junior scientists working on climate-related research. The financial support of CHF800 can be used to attend an international conference held in 2026 focusing on the climate processes of the earth. The winner of the award is expected to hold a presentation and present a poster at the conference. Applicants must be postdoctoral fellows or PhD students involved in climate-related sciences. Applications have to be submitted by 31 October 2025. Details
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
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
100+ Accelerator — Sustainable Action Challenges
100+ Accelerator seeks companies that create products and goods that optimize water use, decarbonize value chains, help farmers produce sustainable and regenerative crops, and/or protect, renew, and grow the biodiversity of all ecosystems to sustain life on Earth. The Accelerator delivers 6 months of remote training to accelerate the collaboration and growth of cohort companies. Participants have access to mentor networks and may receive up to US$100 thousand toward pilot execution. The challenge has an open deadline. Action Challenges
New Energy Nexus — Women-led Climate Startups
She Wins Climate aims at accelerating women-led climate startups and increasing their access to climate investment. The 12-month program is designed to help women climate entrepreneurs in the region to lead the transformation of climate action. Eligible startups must be legally registered, operating for at least one year, and based in Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Thailand, or Vietnam. Founders must identify as women, be 21 or older, hold leadership positions, and be proficient in English. The application deadline is 13 June 2025. She Wins Climate Accelerator
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
African Women in Agricultural Research and Development — Climate Action Fellowship
The AWARD Climate Action Fellowship aims to develop the leadership and technical capacities of African women in climate change adaptation. The one-year program offers leadership development, gender integration training, mentorship, and the opportunity to implement Climate Research and Innovation Projects. Eligible applicants are women from Benin, Cameroon, Ghana, Kenya, Malawi, or Senegal, holding at least a master’s degree in relevant fields, with a minimum of two years’ experience in climate-related work, and residing in Africa throughout the fellowship period. The application deadline is 30 June 2025. Climate Action Fellowship