The cause of species extinction interests me.
Cowspiracy: The Sustainability Secret is a documentary that attacks the environmental damage caused by animal agriculture.
Their facts page states (with references):
Animal agriculture is the leading cause of species extinction, ocean dead zones, water pollution, and habitat destruction. [xix] [iv]
The page also contains many statements that are outright misinterpretations (like the dead oceans by 2048, or 51% of all greenhouse emissions made by animal agriculture), and the references are beyond me, so I don't know if this is true.
Is animal agriculture the leading cause of species extinction, in the modern period?