Richard Oppenlander, author, Comfortably Unaware: “My calculations are that without using any gas or oil or fuel every again from this day forward, we would still exceed our maximum carbon-equivalent greenhouse gas emissions by the year 2030 ... all simply by raising and eating livestock.”
Kirk Smith, Professor of Global Environmental Health, University of California, Berkeley: “If you reduce the amount of methane emissions, the level in the atmosphere goes down fairly quickly, within decades, as opposed to CO₂ if you reduce the emissions to the atmosphere, you don't really see a signal in the atmosphere for 100 years or so.”
Demosthenes Moratos, Sustainability Institute, Molloy College: “The single largest contributor to every known environmental ill known to humankind – deforestation, land use, water scarcity, the destabilization of communities, world hunger – the list doesn’t stop – it’s an environmental disaster that’s being ignored by the very people who should be championing it.”
Will Tuttle, author: “Free-living animals made up, 10,000 years ago, 99% of the biomass and human beings, we made up only 1% of the biomass. Today, only 10,000 years later ... we human beings and the animals that we own as property make up 98% of the biomass and wild free-living animals make up only 2%. We’ve basically completely stolen the world, the earth, from free-living animals to use for ourselves and our cows and pigs and chickens and factory-farmed fish, and the oceans are being even more devastated.”
Oppenlander: “Concerned researchers of the loss of species agree that the primary cause of loss of species on our earth ... is due to overgrazing and habitat loss through livestock production on land and by overfishing, which I call fishing, in our oceans.”
Tuttle: “We’re in the middle of the largest mass extinction of species in 65 million years, the rainforest is being cut down at the rate of an acre per second, and the driving force behind all of this is animal agriculture: cutting down the forest to graze animals and to grow soybeans, genetically engineered soybeans to feed the cows and pigs and chickens and factory-farmed fish.”
Oppenlander: “Ninety-one percent of the loss of the rainforest in the Amazon area thus far to date, 91% of what has been destroyed is due to raising livestock.”
—Howard Lyman, former cattle rancher, author, Mad Cowboy
“To feed a person on an all plant-based vegan diet for a year requires just one-sixth of an acre of land. To feed that same person on a vegetarian diet that includes eggs and dairy requires three times as much land. To feed an average U.S. citizen’s high-consumption diet of meat, dairy, and eggs requires 18 times as much land. This is because you can produce 37,000 pounds of vegetables on one-and-a-half acres but only 375 pounds of meat on that same plot of land.
“The comparison doesn’t end with land use. A vegan diet produces half as much CO₂ as an American omnivore, uses one-eleventh the amount of fossil fuels, one-thirteenth the amount of water, and an eighteenth of the amount of land.
“After adding this all up, I realized I had the choice every single day to save over 1100 gallons of water, 45 pounds of grain, 30 square feet of forested land, the equivalent of 20 pounds of CO₂, and 1 animal’s life. Every single day.”
References and calculations
environment, environmentalism, human rights, animal rights, vegetarianism, veganism