The document discusses some of the challenges facing Catholicism in the modern world, particularly related to stem cell research. It notes that stem cell research requires extracting and killing human embryos, which Catholicism views as devaluing potential human life. However, supporters of stem cell research believe it could save millions of lives if allowed. There is also a challenge of what to do with currently hundreds of thousands of surplus frozen embryos.

1. Catholicism in the Modern World's Problems and Challenges

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