Public writing

The Ant You Can Save

Essay on animal welfare, AI welfare, and probabilistic ethics (with Andreas Mogensen) (2025)

The Case for a Global Ban on Industrial Animal Agriculture by 2050

Essay about the main themes from “Towards a Global Ban on Industrial Animal Agriculture by 2050” (2025)

The Choice of Culling or Letting Bird Flu Spread Obscures Policy Failures

Letter about animal farming and pandemic risk (with Ann Linder and Colin Jerolmack) (2025)

When AI Seems Conscious

Webpage that provides guidance for when chatbots seem conscious (with many others) (2025)

Support for the Hawai’i Octopus Farming Ban

Testimony for Hawai’i State Legislature (with Becca Franks, Adalene Minelli, Katrina Wyman, and Mia MacDonald)  (2025)

Support for the Oregon Octopus Farming Ban

Letter to the Oregon State Legislature (with Becca Franks, Adalene Minelli, Katrina Wyman, and Mia MacDonald) (2025)

Will Humanity Ever Fully Include the Nonhuman World in Its Moral Circle?

Excerpt from The Moral Circle (2025)

Building Safer Cities Means Protecting Animals Too, Not Just Humans

Op-ed about the animal welfare toll of the Los Angeles wildfires (2025)

Support US OCTOPUS Act to Keep Octopuses Wild

Letter about octopus farming regulation, with 99 other authors (2024)

Florida Just Picked the Wrong Kind of Meat to Ban

Op-ed about the Florida ban of cultivated meat (with Arthur Caplan) (2024)

Will Animal Welfare Be COP28’s Sacrificial Lamb?

Op-ed about the importance of animal welfare for COP28 (with Cleo Verkuijl) (2023)

Elephants Have Feelings and Should Have Rights

Op-ed about elephant personhood and rights (2023)

Against Human Exceptionalism

Aeon (2022)

This essay examines and challenges human exceptionalism, the widespread belief that human lives carry more ethical weight than nonhuman lives. Beginning with xenotransplantation, where pigs are used as organ donors, it traces how similar reasoning underlies broader practices—factory farming, wildlife exploitation, and environmental destruction—that impose vast harms on nonhumans. Drawing on capacities-based and relationship-based arguments, the essay shows that even if humans sometimes have stronger claims, this does not justify the scale or severity of current exploitation. Instead, ethical consistency suggests that we should prioritize nonhuman animals far more than we do, and perhaps even over ourselves.

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Public speaking

The Moral Status of Bugs, Bots, and Other Beings

Talk about animal and AI sentience, agency, and welfare (2025)

The Moral Circle

Talk about The Moral Circle (2025)

Animals and the Constitution, with John Adenitire and Raffael Fasel

Hosted a talk on the concept of sentience-based constitutionalism (2025)

Debate: To Shrimp or Not to Shrimp

Debate about shrimp welfare with Lyman Stone, moderated by Peter Singer (2025)

AI, Animals, and the Law: The Basics

Welcome and Introductory Panel at the Artificial Intelligence, Animals, and the Law Conference (2025)

The Case for Integrating Animal and AI Welfare

Keynote address at the AI, Animals, and Digital Minds Conference in NYC (2025)

How AI Is Helping – and Harming – Animals

Launch Event for the Jeremy Coller Centre for Animal Sentience (2025)

A Bill of Rights for Animals, with Cass Sunstein

Hosted a talk on legal rights for animals (2025) 

Could an AI System Be a Moral Patient? with Winnie Street and Geoff Keeling

Hosted a talk on conceptual foundations for AI welfare (2025)

Evaluating AI Welfare, with Robert Long, Rosie Campbell, and Kyle Fish

Hosted a panel on findings from the Claude 4 model welfare assessments (2025)

A Theory of Change for Animal and AI Welfare

Talk about animal and AI welfare (2025)

Are We Ready for AI Welfare?

Talk about AI welfare (2025)

The Case for Nonhuman Personhood

Harvard University School of Law (2019)

Under current U.S. law, one is either a “person” or a “thing.” If you are a person, you have the capacity for rights. If you are a thing, you do not. And unfortunately, all nonhuman animals are currently considered things under U.S. law. In this talk, I present the case for nonhuman personhood. I consider the four main conceptions of personhood that U.S. courts have cited: a species conception, a social contract conception, a community conception, and a capacities conception. I conclude that if we insist on classifying every being as either a person or a thing, and if we want to be both consistent and inclusive, then we have no choice but to accept that nonhumans can be persons too. This talk is based on an amicus brief that a group of 17 philosophers, including me, submitted to the New York Court of Appeals in Spring 2018 in support of the Nonhuman Rights Project, and a book that 13 of these philosophers, including me, published in Fall 2018.

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Coverage and Interviews

Inside the Debate Over AI Consciousness

Article about AI consciousness that discusses a recent talk and includes an interview with me (2026)

B.C. Floods a Reminder that Climate Resilience Must Include Animals

Article about including animals in policy that references the New York Declaration on Animal Consciousness (2026)

Tech Wants You to Believe that AI Is Conscious

Article about AI welfare that discusses “Taking AI Welfare Seriously” (2025)

SDGs: Lack of Animal Health Integration Threatens Public Health, Environment

Coverage of “Integrating Animal Health and Welfare into the 2030 Agenda and Beyond” (2025)

Researchers Want to Include Animal Welfare in Sustainable Development

Coverage of “Integrating Animal Health and Welfare into the 2030 Agenda and Beyond” (2025)

People Are Paying to Get Their Chatbots High on ‘Drugs’

Article about the ethics of getting chatbots “high” that includes a quote from me (2025)

Exploring Sentience, AI Ethics, and a Just Future

Interview about animal and AI welfare (2025)

The Very Hard Problem of AI Consciousness

Article about AI consciousness that references our work on animal and AI welfare and describes one of our talks (2025)

I Want My Dog Back: The Rise of Pet Cloning

Article about the ethics of pet cloning that references “The New York Declaration on Animal Consciousness” (2025)

Animal Health Gap Undermines Global SDG Progress

Coverage of “Integrating Animal Health and Welfare into the 2030 Agenda and Beyond” (2025)

Missing Piece at UNEA: Animal Welfare

Article about UNEA-7 that references “Integrating Animal Health and Welfare into the 2030 Agenda and Beyond” (2025)

Can Machines Suffer?

Article about the AI sentience debate that discusses The Moral Circle (2025)

Jeff Sebo on Digital Minds, and How to Avoid Sleepwalking into a Major Moral Catastrophe

The 80,000 Hours Podcast (2023)

In this episode, host Luisa Rodriguez speaks with Jeff Sebo, director of the NYU Center for Mind, Ethics, and Policy, about how to prepare for a future with digital minds. They discuss the non-negligible chance that AI systems could be sentient by 2030 and what moral, legal, and political status such systems might deserve, including questions of personhood and citizenship. Topics include rights for AI copies, responsibilities in connected minds, population ethics, and the challenges of building AI welfare as a field. Sebo also reflects on the role of improv comedy in ethics and effective altruism.
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