You know what needs to be done: save nature, end the biodiversity crisis, help protect humanity. What you might not know is how we’re going to do it. The best contemporary science and traditional wisdom tell us that nature needs half. That may seem like a lot, but we have a plan for how to get there and transform the way society thinks about and benefits from nature.

Sign the declaration

  • 5%
  • 4
  • 13.9%
  • 11
United States
  • 7.6%
  • 4

Our Purpose

Protect 50% of the planet by 2030


Nature Needs Half is an international coalition of scientists, conservationists, nonprofits, and public officials defending nature at the scale she needs to continue to function for the benefit of all life, and support human well-being. And we've got a global ground game in place that will protect 50% of the planet by 2030, turning the tide in favor of Earth's life support systems and transforming society's relationship with nature, one ecoregion and country at a time.

Help achieve half in your region

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  Contact: Amy Lewis                                                     ...

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The Science

Why Act Now

We can stop the sixth mass extinction if we protect approximately 50% of each the 846 ecoregions that provide habitat for all of Earth's biodiversity. That means finding leaders and organizations around the world willing to align existing efforts around protecting and interconnecting nature in their region.

50% by 2030

Opportunities to Make a Difference

Sign the Declaration!

Our movement grows with each new signatory. Foster new opportunities to work across political and institutional boundaries by joining the Nature Needs Half Network today.

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Who We Are

Since 2009, Nature Needs Half has empowered others to take action for nature. Discover more about the movements current leadership.

Citizen of the Confederated Salish and Kootenai Tribes

Julie Cajune, Salish Educator

'Earth is our mother and giver of all things to all people. The right relationship with her is basic and essential to the health and well-being of all people. Nature Needs Half is based on that principle, and supports native peoples cultures and lands. We need Nature Needs Half.'

Featured Member

The Kayapo Project

Advancing a new model of rainforest conservation led by Indigenous tradition, the Kayapo Indians implemented the most successful conservation effort in the tropics. They are the true guardians of the rainforest.

Featured Member

Sanctuary Asia

Strengthening awareness and support for India's natural heritage, Sanctuary Asia is India's oldest and leading nature and conservation portal, serving as a powerful connective tissue for coordinating India's environmental movement.

Featured Member is dedicated to a healthy world. Their first order of business is the swift realization of MAPS: the Marine Arctic Peace Sanctuary. Their long-term vision is GPS, the Global Peace Sanctuary, to address hunger and poverty internationally.


See What's Happening on the Ground