U.S. Secretary of State John Kerry addresses delegates before he signed the COP21 Climate Change Agreement on Earth Day, April 22, 2016, at the United Nations General Assembly Hall in New York, N.Y.

The Paris Agreement: Annotated

Adopted by almost 200 parties at the 2015 UN Climate Change Conference, the Paris Agreement captures international ambitions for cooperative climate action.
Watercolor painting of the earth by Martin Eklund

Planetary Health: Foundations and Key Concepts

The groundwork for the field of planetary health was laid by a range of disciplines and movements, including medicine, ecology, health, and feminism.
A hand feeding a bird on the road

The One Health Framework

A policy framework proposal seeks to elevate the needs and rights of all living organisms in the environment.
A campaigner gives a leaflet to a woman at the Abortion Travel agency store on April 10, 2014 in Madrid, Spain.

Evading Abortion Bans with Mutual Aid

One scholar chronicles how communities have banded together to help each other with abortion care even when it’s against the law.
An Ayahuasca visual

The Colonization of the Ayahuasca Experience

“If someone is from the Amazon,” says Evgenia Fotiou, an anthropologist who studies Western ayahuasca usage, “they bring some legitimacy” to an ayahuasca ritual.
A Loowatt worker replaces the biodegradable waste-collection bag in a waterless toilet in Madagascar

A Toast to Toilets!

Waterless toilets battle the global sanitation crisis.
tiny fur tree growing after forest fire

It’s the End of the World as We Know It. Is there Any Room for Optimism?

Climate scientists tend to be optimistic and have faith that humanity can engineer our way out of the climate change we’ve created.