A history of Catholicism and science is given in an introduction and video here by physicist and Catholic priest, Andrew Pinsent. An interesting tour for anyone interested in the histories of Church and science and an eye-opener for bigots. After watching this you will hopefully begin questioning science and what makes something – like medicine – scientific. Hahnemann laid the basis of a scientific approach to medicine in his Organon of the Rational Art and Science of Healing, his Chronic Diseases and Materia Medica Pura. For more on his contribution to medicine as a science browse here
In other words, as is well documented in the video: atheists don’t own science.