Click here to access resources for the 48th anniversary of Earth Day (today) from Catholic Climate Covenant. Resources are also available here from the Catholic Health Association of the United States, where you will find a prayer from St. Basil the Great:
Oh God, enlarge within us the sense of fellowship with all living things; with our brothers the animals to whom you gave the earth as their home in common with us. We remember with shame that in the past we have exercised the high domain of humans with ruthless cruelty so that the voice of the earth, which should have gone up to you in song, has been a groan of travail. May we realize that they live not for us alone, but for themselves, and for you, and that they love the sweetness of life. Amen.