The Nikon Small World Competition is open to anyone with an interest in photography through the microscope. Each year, the top 20 prize-winners are exhibited at numerous museums and science centers throughout the United States and Canada. The Top 3 winners will receive up to US$3 thousand. Only photomicrographs are eligible. Entries must be received no later than 30 April 2026. Know more
worldwide
IUCN-Netherlands — Land Acquisition for Conservation
The World Conservation Union in the Netherlands (IUCN-Netherlands) provides grants up to €85 thousand for the purchase and protection of threatened wildlife habitats and vulnerable ecosystems in Asia, Asia-Pacific countries, Africa, and Latin America. The grants are to qualified and experienced local non-profit conservation organizations. Local conservation NGOs and CSOs are eligible for this program and are invited to submit their proposals. The deadline for applications is 01 May 2026. Land Acquisition Fund
Zayed Sustainability Prize — Call for Applications
The Zayed Sustainability Prize recognizes achievements that are driving impact, innovation and inspiration in environmental stewardship and global sustainability. The Prize is awarded across several categories: (i) Health; (ii) Food; (iii) Energy; (iv) Water; and (v) Global high schools (i.e., high schools in six world regions). The winners in each category receive US$600 thousand each. The closing date for applications and nominations is June 2026. Know more
Zendesk — Tech for Good Impact Awards
The Zendesk Tech for Good Impact Awards provides free software and multiple grants ranging from US$5 thousand to US$50 thousand to global nonprofit organizations. Impact Awards are made to products that promote resilience, foster community, and increase access to careers in technology in areas that range from refugee rights to environmental justice. Zendesk will also provide free product and software donations and Pro Bono support. Applications are due 15 July 2026. Tech for Good Impact Awards
UNESCO World Heritage Center — Requests for International Assistance
Grants under the World Heritage Convention are made to help protect the World Cultural and Natural Heritage sites. Requests must be transmitted by a State Party National Commission for UNESCO or Permanent Delegation to UNESCO, or an appropriate governmental department or ministry. The limits on funding vary with the type of request (e.g., technical cooperation, training and research, promotion and education, preparatory assistance, emergency assistance). The next deadline for submitting requests is 31 October 2026. More information
11th Hour Racing — Ocean Health and Marine Stewardship
11th Hour Racing supports innovative projects that address environmental challenges in coastal communities and the marine industry. The program offers funding to non-profit organizations globally, though it prioritizes projects in the Caribbean, Puerto Rico, Hawaii, and the East Coast of the United States. Grants typically support initiatives focused on ocean literacy, plastic pollution reduction, clean maritime technologies, and ecosystem restoration. Most awards range from US$40 thousand to US$150 thousand for a one-year period, with an average grant size of US$75 thousand. Applications will be reviewed on a rolling basis throughout the year. About this opportunity
Leakey Foundation — Field School Scholarship
The Joan Cogswell Donner Field School Scholarship provides up to US$2 thousand towards field school tuition for students to support training in fieldwork related to human origins research. Applications for this scholarship have to be submitted by the field school director, not the scholarship recipient. Recipients must be enrolled in an undergraduate or graduate program in a country where there are limited resources for academic development. The scholarship is awarded year-round. Applications can be submitted anytime. Field school scholarship
The Earth Foundation — Earth Prize Schools Competition
The Earth Foundation invites secondary school students aged 13–19, working individually or in teams, to propose innovative solutions to environmental challenges at the local, national, or global level. Participants receive mentorship, learning resources, and expert guidance to refine their projects, with selected entries competing for cash prizes of up to US$12,500. The competition is open worldwide to eligible secondary school students. The application deadline is 30 January 2026. Earth Prize Schools Competition
Mangrove Breakthrough — Mangrove Conservation and Restoration
Mangrove Breakthrough seeks projects worldwide that protect, restore or support mangrove ecosystems. Eligible proposals include mangrove restoration or conservation; blue-carbon finance; biodiversity or climate-linked crediting mechanisms; community-based livelihood or stewardship initiatives; nature-tech or monitoring tools for mangrove health; and sustainable businesses tied to mangrove landscapes (e.g. fisheries, coastal agriculture, eco-tourism). Successful submissions gain visibility, exposure at global climate events, and access to investors or funders. The deadline to submit the Expression of Interest is 30 January 2026. Link to more details
University of Pennsylvania — Sustainability and Conservation Science Postdoctoral Fellowship
The Sustainability and Conservation Science Postdoctoral Fellowship supports early-career researchers conducting interdisciplinary work at the intersection of environmental science, conservation, sustainability, and policy-relevant research. The fellowship is open to recent PhD graduates from relevant disciplines. Fellows receive a competitive salary and full benefits for a two-year appointment, along with research support, mentoring, and opportunities for collaboration across Penn departments and centers. The application deadline is 30 January 2026. Postdoctoral Fellowship