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.

A highly politicized issue that is central to the teaching of Pope Francis. The science and the moral framework are clear. Will American Catholics respond at the voting booth?

Over the past two years, 31 people from the municipality of Tocoa, on the lush north shore of Honduras, have faced criminal prosecution as a result of their opposition to an iron ore mining project in the Botaderos Mount “Carlos Escaleras” National Park.