The documentary film "Cowspiracy," released this week in select cities, builds on the growing cultural notion that the single greatest environmental threat to the planet is the hamburger you had for lunch the other day. As director Kip Andersen recently told the Source magazine: "A lot of us are waking up and realizing we can choose to either support all life on this planet or kill all life on this planet, simply by virtue of what we eat day in and day out. One way to eat takes life, while another spares as many lives (plant, animal and otherwise) as possible."

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