We are all global citizens called to protect Earth.

Species are disappearing at an alarming rate.

Join us on Half-Earth Day 2021.

"Biodiversity holds the world steady." - E.O. Wilson

With science at its core and our transcendent moral obligation to the rest of life at its heart, the Half-Earth Project® is working to conserve half the land and sea to safeguard the bulk of biodiversity, including ourselves.

Learn more about Half-Earth Day 2021

This is our moment.

Our moment for biodiversity…

to go forward in courage and optimism

to make the science matter

to bring people and nature together

This is our moment to

leave no species behind.

As a member of the community of voices working toward a Half-Earth Future, we invite you to join us on October 22nd, for the 5th annual Half-Earth Day.

About Half-Earth Day

Half-Earth Day® brings together people from around the world and across disciplines to share their unique perspectives and thought leadership on how we can work together to achieve the goal of Half-Earth and ensure the health of our planet for future generations.

Connect with fellow conservationists working to protect biodiversity in education, science, and business sessions.

Learn from the world’s preeminent thinkers, scientists, business and conservation leaders in high-level panels.

Join us and be inspired in common cause to save the natural world.

Hear from E.O. Wilson, Sir David Attenborough, Sir Tim Smit, Razan Al Mubarak, Hindou Oumarou Ibrahim, Johan Rockström, and many more…

Join us for a day of virtual plenary sessions, panels, inspiring films, and keynotes. Participate in discussions and live Q&As with fellow attendees. Explore sessions designed to explore the latest in thinking, research, and conservation science and education in support of the grand goal of setting aside half the earth and seas to save Nature.

Experience a once-in-a-lifetime conversation between E.O. Wilson and Sir David Attenbourgh moderated by Sir Tim Smit.


October 22
A full day of panel discussions, keynotes, and more
(9 am – 2 pm EDT/1 – 6 pm UTC/2 – 7 pm BST)

moderated by Sir Tim Smit

A lecture by esteemed biologist and
naturalist E.O. Wilson

Our closing keynote with E.O. Wilson and Sir David Attenborough in conversation with Sir Tim Smit
(2 – 3:30 pm EDT/6 – 7:30 pm UTC/7 – 8:30 pm BST)

The Half-Earth Project

Half-Earth is a call to protect half the land and sea in order to manage sufficient habitat to reverse the species extinction crisis and ensure the long-term health of our planet. The Half-Earth Project is bringing this goal to life.

Statement on Biden-Harris Administration Executive Order on Climate Crisis

“We applaud the Biden-Harris Administration’s pledge to put America on the path to ‘conserve 30 percent of its ocean of our lands and oceans by 2030.’ Conservation areas are key to safeguarding species and to ensure future generations can benefit from biodiversity’s many contributions to functioning ecosystems and human well-being. The Half-Earth Project® recognizes the need for a much expanded and carefully selected network of lands, waters, and ocean prioritized for conservation to achieve this goal.”

Read full statement

Dr. Paula J. Ehrlich, DVM, PhD, President & CEO, E.O. Wilson Biodiversity Foundation, Half-Earth Project® Lead

On Justice, Equity, Diversity, and Inclusion and the Half-Earth Project

We commit to prioritizing listening and taking clear steps externally and internally to combat racism and oppression of all types. We commit to working toward justice, equity, diversity and inclusion in our leadership, our programs, our strategic planning, our operations, our communications and our fundraising. We commit to creating a culture at the foundation that educates staff and stakeholders on the issues of justice, equity, diversity and inclusion and holds opportunity for traditionally excluded groups to join in processes, activities and decision-making. We welcome and encourage feedback along the way.

We commit to understanding that this body of work IS our work if we are to achieve the goal of Half-Earth and benefit all people and species.

Honoring Indigenous Communities

“The Half-Earth Project honors the wisdom of the traditional owners of the lands and waters we aim to protect and their ancient ways of seeing and experiencing nature. In the spirit of the oral tradition of the Blackfoot, we aim to honor ‘the flash of the firefly in the night, the breath of the buffalo in the wintertime, and the little shadow that runs across the grass and loses itself in the sunset.’ We aim to restore and protect life. We thank our Indigenous communities for their historic stewardship of life, their critical role in reaffirming and repairing our relationship with it and their present and future partnership.” – Paula Ehrlich, President & CEO of the E.O. Wilson Biodiversity Foundation and Lead of the Half-Earth Project

View full statement at left. Seek out the Indigenous history of the place where you live at https://native-land.ca/.


Conserve to study, study to conserve

In this story map we visit Gorongosa National Park in Mozambique. Once ravaged by civil war, the park is a leading example of community-based management and the “boots on the ground” scientific work helping to fill our species knowledge gap. 

‘We are at a moment of no return’

“There have been many victories, but they’re victories in a losing war. I’ve worried about that a lot. It’s clear to me as it is to many others who have had experience in conservation programs that we need to take a new approach to saving biodiversity on the Earth as a whole. An effort that I call Half-Earth.”

Edward O. Wilson made these remarks during a World Majlis at Expo 2020 titled “Nature’s Giant Game of Jenga.” during Climate and Biodiversity Week. The discussion was moderated by Federica Busa, with participation from Her Excellency Razan Alexa Mubarak, Sir Tim Smit KBE, Paula J. Ehrlich, Joaquin Ruiz, Runo Sá, and Aaesha Ahmed Alexa Shehyari, with contributions from Sheikha Shamma pint Sultan bin Khalifa Alexa Nahyan, Edward O. Wilson, and Angaangaq Angakkorsuaq.

Green Radio Hour with Jon Bowermaster

Paula Ehrlich, President & CEO of the E.O. Wilson Biodiversity Foundation and lead of the Half-Earth Project, celebrates the upcoming Half-Earth Day in a conversation with Jon Bowermaster, and talks about E.O. Wilson, the science of Half-Earth, and how people are coming together on Half-Earth Day to discuss how they are working to achieve the goal of Half-Earth.

‘Love Nature’ Podcast with E.O. Wilson – Part 2

In Part II of the “Love Nature: The Biophilia Podcast,” E.O. Wilson explores his concept of Half-Earth, a call to protect half the Earth’s land and sea in order to manage sufficient habitat to reverse the species extinction crisis and ensure species have the space they need to thrive. Hear how the Half-Earth Project is bringing this vision to life. (Image of E.O. Wilson by Dave Zoboski.)