Human beings are omnivorous and should have discretion. Why do I say humans are omnivorous? Because all anthropological, archaeological and medical data supports the statement. Omnivorous: 1. feeding on many kinds of food, especially on both plants and flesh. 2. making use of everything available. Anecdotal data also supports this contention. Those in activities that require extreme effort such as hockey players are a perfect example. A player who relies entirely on plant protein can not work as long a shift as a player with a similar physic who eats both fish and vegetables. Those whose diet includes at least 30% red meat (again with similar physics) can play or work far long than those who eat only marine animals and vegetables. Those sports participants who were omnivorous and became vegetarians can do roughly two thirds of what they could accomplish after changing their diet. Humans need meat! As to the output of CO2 we are spraying into our atmosphere, can we stop using emotions a...