Natalie Portman hasn’t eaten meat since she was nine years old. But it wasn’t until she read Jonathan Safran Foer’s “Eating Animals” in 2009 that she realized consuming dairy and eggs could harm जानवर too. The book struck her so intensely that she instantly called up Foer and told him she thought the project would also work as a documentary. The writer and the actress had been फ्रेंड्स for years, striking up a friendship after Portman — then a student at Harvard विश्वविद्यालय — approached Foer after a Cambridge, Mass., book पढ़ना for his 2002 novel “Everything...