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Presentation Sr. Cathy Crawford, left, and Winnie Liywali, right, inspect a borehole in Mwanambinyi, Zambia. (Derrick Siliminia)

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The climate is changing,
a matter of moral urgency.

How Catholics and other faith groups speak out and take action. Where ecological concerns and moral conviction meet, well that's our beat.

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Presentation Sisters in Zambia enhance public health with clean water

The Sisters of the Presentation of the Blessed Virgin Mary's efforts in sinking wells and installing water pumps have been instrumental in improving access to clean water and raising living standards in Mongu district.

An expert works to clear a mass of marine mucilage, a thick, slimy substance made up of compounds released by marine organisms, from Turkey's Sea of Marmara at the Caddebostan shore, on the Asian side of Istanbul, June 8, 2021. (AP/Kemal Aslan)

Istanbul's 'sea snot' is a test case for ecological sin

If ecological sin is real, then ecological repentance must be real, too: pipes that work, standards that bite, and the stubborn, persistent work of repair.

Ersun Augustinus Kayra

World leaders gather for a photo Nov. 7 at the Belem Climate Summit gather in Belem, Brazil, ahead of the United Nations Climate Change Conference, or COP30. Absent was U.S. President Donald Trump, who did not send an official delegation and has moved to exit the U.S. from the Paris Agreement and its underlying treaty. (OSV News/Reuters/Adriano Machado)

US 'abandoning its moral responsibility' with exit from bedrock climate treaty, Catholic groups say

The United States — the largest source of historical emissions and top user and producer of oil and gas — will stand as the only country in the world not part of the agreement.

Daughters of Mary of the Immaculate Conception Sr. Mary Teresa Pham Thi Lai (center) distributes Christmas cakes to people affected by natural disasters at her community in Hue, Vietnam, Dec. 23, 2025. (Joachim Pham)

Vietnamese nuns, disaster victims rebuild Christmas from debris and share hope

Across Vietnam's flood-battered central provinces, nuns observed Christmas quietly, scaling back celebrations to redirect resources to those whose homes, crops and livelihoods were swept away by storms and floods.