Protect Earth and Nature
Filter by topic to discover resources, organizations, and opportunities to take action.
Local Stewardship
Join CNS conservation, restoration, and community stewardship activities.
Explore CNS events
Volunteer for Nature
Find conservation and public-land volunteering through national and regional opportunities.
Find opportunities
Wildlife & Biodiversity
Explore wildlife, habitats, biodiversity threats, and conservation programs.
Explore wildlife
Global Conservation
Learn about species protection and global conservation priorities.
Visit IUCN
Climate & Earth
Understand climate trends, Earth observations, and the science behind change.
Explore NASA Earth
Environmental Data
Explore environmental indicators, research, and sustainability topics.
Explore UNEP
Oceans & Water
Learn about marine ecosystems, coastal resilience, and ocean science.
Explore NOAA
Observe Nature
Record wildlife and plants, contribute observations, and learn from a global community.
Open iNaturalist
Citizen Science Projects
Join real research projects online or outdoors, no advanced training required.
Explore projectsWays to be active
Choose what you care about. Your selections help identify organizations to connect with and give Mr. Nature a more focused starting point.
Meet the guardians of nature
This is a curated, living guide to the people and organizations working every day to protect the land, water, wildlife, and communities we love across the United States 🇺🇸.
Use this guide to discover, connect, and take action—whether you want to volunteer, donate, collaborate, or simply learn who is shaping conservation near you.
National Organizations
Established organizations working across the country on land, water, wildlife, climate, science, and environmental justice.
Regional Organizations
Explore groups rooted in the places and ecosystems that matter to you.
Ask Mr. Nature
Find a conservation organization, get involved locally, and understand environmental issues globally.
From curiosity to impact
Turn curiosity into action with CNS
Connect with nature-minded people, explore local stewardship activities, and take your next step toward protecting the places and wildlife you care about.