President Biden's turnabout on the Paris climate accords was cheered by environmental activists in Africa, a continent that contributes a tiny amount to the problem of global warming but stands to suffer mightily because of climate change.

Climate change and environmental destruction are forcing millions from their homes, and Catholics have a responsibility to assist them, Pope Francis wrote.

Tiny pieces of plastic waste, already found at the top of Mount Everest and the bottom of the ocean, may now have a toehold in the human womb, writes Kathleen Bonnette.

Pope Francis pledged Vatican City State would achieve net-zero carbon emissions before the year 2050 and urged everyone in the world to be part of a new culture.

Inspired by St. Francis of Assisi and by Pope Francis, 2,000 young adults met online to discuss making the economy more responsive to human dignity and more respectful of creation.

The predominant global economic system is "unsustainable," particularly in its impact on the environment, Pope Francis said.