This may surprise you, because it surprised me when I found out, but the single biggest thing that an individual can do to combat climate change is to stop eating animals. Because of the huge, huge carbon footprint of animal agriculture. I was shocked to find out that animal agriculture directly or indirectly accounts for 14.5% of all greenhouse gas emissions, compared to all transportation – every ship, car, truck, plane on the planet only accounts for 13%. Less than animal agriculture. So most people think that buying a Prius is the answer, and it’s certainly not wrong, but it’s not the biggest agent of climate change.

Going vegetarian may be the most effective way to fight global warming. Buddhist practitioners have practiced vegetarianism over the last 2000 years. We are vegetarian with the intention to nourish our compassion towards the animals. Now we also know that we eat vegetarian in order to protect the earth...

["Do you see a tie in between being a vegetarian and helping the environment?"] All of our cleaning products, lotions, shampoos, and toothpaste are organic and non-chemical, non-animal tested. You don’t have to be a vegetarian to be against animal testing, but it goes hand in hand. You know the rainforest that’s cut down or the land that’s cleared for cattle and factory farm animals, the destruction of the rain forest specifically for beef cattle is mind boggling to the both of us that they would destroy a very precious eco system just so cows have a place to eat grass. The people in South America don’t even really get to eat that beef but the land is being destroyed for it, and definitely the methane that’s produced from the cows and pigs. It’s definitely contributing to global warming. It’s hard for people to wrap their minds around the fact that their cheeseburger is making global warming worse. I think it’s an important message for people to get, but it’s hard for people to put the two together and make the connection.

Vegetarianism is a really important part of what we need to do to help the environment. The meat industry is really toxic to the environment. The cattle industry — besides the fact that there's a lot of cruel things happening — the manure is extremely toxic. We just need to pull back as a culture as much as we can.

The leading cause of carbon emissions in the world is animal agriculture and no one is talking about it. This is the real issue that is driving climate change. … As a vegan I save 1,100 gallons of water a day. … If we are talking about a sustainability message, you cannot leave out the animal message – absolutely impossible. … We are looking at a world that is facing ultimate destruction if we don’t make better, smarter choices, and that starts with you. Every dollar you spend goes to feed a corporation that is either responsible or not responsible. … There are three things I want to make movies about: environmental problems, animals and human rights. Those are the three things I look out for all the time.

By eating meat we share the responsibility of climate change, the destruction of our forests, and the poisoning of our air and water. The simple act of becoming a vegetarian will make a difference in the health of our planet.

Identify an agrarian problem—greenhouse gas emissions, overuse of antibiotics and dangerous pesticides, genetically modified crops, salmonella, E. coli, waste disposal, excessive use of water—and trace it to its ultimate origin and you will likely find an animal. … Research shows that veganism, which obviates the inherent waste involved in growing the grains used to fatten animals for food in conventional systems, is seven times more energy efficient than eating meat and, if embraced globally, could reduce greenhouse gas emissions from conventional agriculture by 94 percent. … But with rare exception, those in the big, lumpy tent have thrown down a red carpet for “ethical butchers” while generally dismissing animal rights advocates as smug ascetics (which they can be) and crazed activists (ditto) who are driven more by sappy sentiment than rock-ribbed reason. It’s an easy move to make. But the problem with this dismissal—and the overall refusal to address the ethics of killing animals for food—is that it potentially anchors the Food Movement’s admirable goals in the shifting sands of an unresolved hypocrisy. Let’s call it the “omnivore’s contradiction.”

If you can’t go vegan for the animals, why not go vegan for yourself? By switching to a plant-based diet, you won’t just help save animals’ lives, you might just save the planet. The meat and dairy industries kill 70bn animals every year – and a new report has found that they are on track to become the world’s biggest contributors to climate change. … Eventually, a tipping point will come, and the planet will turn into a gigantic slaughterhouse. It won’t be just calves and piglets these industries are killing – it will be you, your children and the children they could have gone on to raise. … So each time you eat bacon, or drink milk, you have not only invested in the slaughter of pigs or the abuse of cows, you’ve signed your own death warrant. For this is a problem that is predicted to escalate in the coming decades and emissions for agriculture are projected to increase 80% by 2050. In the 1980s, people started saying ‘meat is murder’, but it could become even worse than that – meat could mean Armageddon.

If anyone wants to save the planet, all they have to do is just stop eating meat. That's the single most important thing you could do. It's staggering when you think about it. Vegetarianism takes care of so many things in one shot: ecology, famine, cruelty.

My vegetarian diet allows me to lead a healthier lifestyle, reduce my carbon footprint, and save the lives of more than 100 animals every year. I’m stronger and healthier than ever, and I feel good about doing something positive for myself, animals, and the planet.

Even seemingly small choices can have a big impact on our health, our community and the world around us. Going vegetarian is one of the easiest ways to improve our health, help countless animals and protect the Earth.

Meat is a wasteful use of water and creates a lot of greenhouse gases. It puts enormous pressure on the world’s resources. A vegetarian diet is better. … I think it’s important that people think about what they are doing and that includes what they are eating.

Those who claim to care about the wellbeing of human beings and the preservation of our environment should become vegetarians for that reason alone. They would thereby increase the amount of grain available to feed people elsewhere, reduce pollution, save water and energy, and cease contributing to the clearing of forests; moreover, since a vegetarian diet is cheaper than one based on meat dishes, they would have more money available to devote to famine relief, population control, or whatever social or political cause they thought most urgent. … when nonvegetarians say that “human problems come first” I cannot help wondering what exactly it is that they are doing for human beings that compels them to continue to support the wasteful, ruthless exploitation of farm animals.

[To help combat climate change] Give up meat for one day (per week) initially, and decrease it from there. In terms of immediacy of action and the feasibility of bringing about reductions in a short period of time, it clearly is the most attractive opportunity.