Irony

The Vatican yesterday issued a new document that denounces same-sex marriage, abortion and in vitro fertilization, and says the "natural institution of marriage" of a woman to a man faces unprecedented threats.

http://www.catholicsinpubliclife.org

Ironic then that:

Lazzaro Spallanzani (10 January 1729 – 12 February 1799)

Spallanzani was a Catholic

He also discovered and described animal (mammal) reproduction, showing that it requires both semen and an ovum. He was the first to perform in vitro fertilization, with frogs, and an artificial insemination, using a dog.