Humane Genaras - The Toughness of the Magisterium

Pius the twelfth was a strong supporter of an old universe, as well as big bang cosmology. The caution he expressed in humane genaras was regarding the theory of evolution. As a pope who believed the universe is billions of years old, he didn't ex sa problem with non human evolution. It was only in regard to human evolution that he was tentative.