Category Archives: Vegetarianism / Veganism

A vegetarian eats only plant foods, with or without the addition of dairy products, eggs, and honey. A vegan doesn’t eat any animal products and avoids the use of animal products for any other purposes; the exact definition is debated.

Basic income and veganism

Basic income demonstration in Berlin, 2013. Credit: stanjourdan,, CC BY-SA 2.0.

Systemic, radical changes in the United States are now in the cards. You can feel it in the news and in the streets, even with COVID-19 acting as a damper on protests. But we haven’t had much discussion of what specifically these changes should be. We know—though mainstream economists still haven’t figured it out—that economic growth isn’t the answer: we have hit the limits to growth. We need a basic income: a guaranteed cash payment to all adult citizens sufficient to support a minimal lifestyle.

Now you’re probably saying to yourself, “OK, basic income: possibly a good idea. But what does this have to do with veganism?” Continue reading

Veganism as a response to limits to growth

A makeshift memorial near the bus stop where the incident occurred, photographed on May 27. This image was originally posted to Flickr by Lorie Shaull at

Limits to growth are now here. Our economy used to work just fine but hasn’t been working so well for the past few decades. With limits to growth, it is now not going to work at all.

One failure is our way of dealing with social inequality. The only way that we have tried to deal with social inequality is through economic growth. We’ve assumed for some time that capitalistic expansion of the economy will solve problems of inequality. “A rising tide lifts all boats,” that is, a bigger economy will be bigger for everyone. Continue reading

Keep calm: plants have protein

I’m ready for this campaign.

The pandemic is scary, but its scariest aspect is something we still don’t know: what will be our society’s ultimate reaction to it? Our treatment of animals was key to the origins of the pandemic, but it is also part of resolving the pandemic.

President Trump is struggling to keep slaughterhouses going and recently declared them to be “essential.” His views are now being backed up by armed right wing protesters demonstrating to reopen the economy. Slaughterhouses are trying to return to their bloody normal, with some sort of minimal protections for slaughterhouse workers; but protections for workers from the virus are still not mandated by the CDC. Some think that slaughterhouses will just continue to produce meat even if it means increased risks to workers.

Vegans can become the voice of calm in this crisis by stating the obvious: plants have protein. Continue reading

Is clean meat vegan?

Memphis Meats product (source:

By now, many people have heard about “clean meat” — also known as “lab-grown meat,” “cell-based meat,” or “cultured meat,” among other monikers. It’s meat that doesn’t come from slaughtering an animal, but through cultivation of meat cells in a lab. No slaughtering of animals is required.

Now the question is, is clean meat vegan? Continue reading

We Are The Weather—review

We Are The Weather. Saving the Planet Begins at Breakfast. Jonathan Safran Foer. Farrar, Straus, and Giroux, 2019.

There is now a growing chorus of well-known popular books on the subject of climate change. Everyone from Al Gore to Naomi Klein has gotten into the act. Jonathan Safran Foer has outdone them all: BECAUSE, almost alone among such writers, he discusses livestock agriculture in some depth. He knows this implies veganism and addresses, in a very personal way, the difficulties of following a vegan diet.

Foer believes that livestock is about HALF of our climate problem — in line with the Goodland and Anhang article “Livestock and Climate Change,” which he discusses. Foer understands the role of livestock in the climate issue better than most vegans. While FAO has said that 14.5% of human greenhouse gas emissions come from livestock agriculture, the reality is more like 51%!

Continue reading

Greta Thunberg and George Monbiot on reforestation

Greta Thunberg and George Monbiot have made a short and excellent YouTube video on forests and climate change. Their thesis: to deal with climate change, we need to eliminate fossil fuels, but this alone will not be enough. We also need reforestation. Key quote: “There’s a magic machine that sucks carbon out of the air, costs very little, and builds itself: a tree.” Plant trees, suck carbon out of the air. What’s not to love?

What they don’t mention is veganism. To reforest on a scale that will be significant we need to drastically reduce the land dedicated to the livestock industry. Continue reading

Reforestation is essential to deal with climate change

Whatever happened to the estimate that 51% of all human-caused greenhouse gas emissions are from livestock agriculture (“Livestock and Climate Change,” Robert Goodland and Jeff Anhang, WorldWatch, Nov.-Dec. 2009)? This certainly supports the vegan cause, but is it scientifically valid?

This claim revolves around how much of an impact human land use has on the carbon cycle. What difference would it make if we didn’t have any livestock industry today? The areas now used to graze livestock, or grow crops for livestock, would revert to their natural vegetation, which in many cases would be forest areas. A new article published earlier this month in Science now gives us a better idea of the potential of reforestation. Even excluding existing forests, urban areas, and farm areas (!), reforestation could store around 200 gigatons of carbon, which is about two-thirds of the carbon humans have put into the atmosphere since the industrial revolution, and thus getting rid of 25% of the CO2 currently in the atmosphere. Continue reading

Food and the environment: Top 10 things to think about

Here are the top 10 things to think about when considering the effect of food on the environment:

1. Humans and their livestock now constitute over 95% of all the large animal biomass on the planet.
Vaclav Smil, Harvesting the Biosphere: What We Have Taken from Nature (The MIT Press, 2013), p. 228, table 12.2.
Y. M. Bar-On et al., “The biomass distribution on Earth,” PNAS, June 19, 2018, 115(25): 6506–6511. Continue reading

“Climate Change and Veganism — an update”

In case you’re in Denver on Earth Day weekend, I’ll be speaking at the Denver Vegans potluck this Saturday, April 21. The title of my talk is “Climate Change and Veganism — an Update.” The Denver Vegans monthly vegan potluck will be held at the Rocky Mountain Miracle Center, 1939 South Monroe Street in Denver, 6 pm to 8:30 pm. Bring a vegan dish; the presentation will follow the meal. For details and to sign up, visit the Denver Vegans meetup page. Continue reading

Eat for the Planet — review

Eat for the Planet. Saving the World, One Bite at a Time. Nil Zacharias and Gene Stone. Abrams Image, 2018. Hardcover, 160 pages, $19.99 / $24.99 Can.

Plant-based diets and the environment — isn’t it about time we started talking to a wider audience about this? This attractively produced book will surely get people discussing these vital concerns for the future of the planet. Zacharias and Stone give plenty of evidence that a plant-based diet is also a “planet”-based diet. In a remarkably narrow space, the authors quickly cover seven key issues — land, water, food, energy, pollution, deforestation, and species extinction, showing how a single solution can address them all. Continue reading

Judge wants to know about respiration and climate

The California judge in the climate change liability trial wants to know if human respiration is a problem for climate change. Humans are breathing out carbon dioxide (CO2), and human population has increased dramatically in just the past century. Is this part of the climate problem? (I wrote about this previously but am now revisiting it.)

Here’s the question that the judge asked:

“In grade school, many of us were taught that humans exhale CO2 but plants absorb CO2 and return oxygen to the air (keeping the carbon for fiber). Is this still valid? If so, why hasn’t plant life turned the higher levels of CO2 back into oxygen? Given the increase in human population on Earth (four billion), is human respiration a contributing factor to the buildup of CO2?” Continue reading

Air pollution: another reason to go vegan for the climate

There’s a lot of disturbing news about climate right now: methane sinkholes in Siberia, disappearing Arctic sea ice, and balmy winter temperatures at the North Pole. But a recent scientific report on air pollution (“anthropogenic aerosols”) in the atmosphere, highlighted in this interview with the lead researcher, adds another dimension to “disturbing” and gives us yet another reason to go vegan for the climate.

What does air pollution have to do with climate breakdown, and what does any of this have to do with veganism? Continue reading

Veganism is not enough

A giant methane sinkhole in Siberia. Should we be worried?

Many vegans, upon studying environmental issues a bit, conclude that there’s no such thing as a meat-eating environmentalist. Well, guess what, vegans! You’re right. Veganism is a necessary part of any sane environmental approach. But it’s still not enough. Even if everyone goes vegan, if we keep burning coal, driving cars, and overpopulating the planet, universal veganism isn’t going to save us. Let’s take a look at some key environmental issues. Continue reading

Vegans: take the lead in climate action in 2018

Kate Lawrence (left) talks about veganism with another marcher at the 2017 climate march in Denver. There was 8 inches of snow that day, while it was above 90 F in Washington, D. C.

In 2018, vegans need to take the lead in climate action.

There has been increasing awareness within the climate movement about the relationship between food, land use, and climate. A flyer urges “put plants on your plate”; a draft of a Climate Mobilization document wants “a reduction in meat-based consumption.” These are steps in the right direction, but we need to do better than this. The climate situation is much more serious than we thought and radical solutions are now absolutely necessary. Continue reading

Breathing and climate change

Source: Derzsi Elekes Andor

Does breathing contribute to climate change? With every breath we take, we breathe in oxygen and breathe out carbon dioxide. Carbon dioxide is a greenhouse gas. So are we contributing to climate change just by the act of breathing?

If someone knows a bit about biology, they might respond, “no, because new plants will replace the plants we have eaten, and the new plants will take up the carbon dioxide.” The actual answer is not some glib assurance that new plants will replace the old, but “it depends.” And when you spin out what precisely it depends on, it has very significant implications for how we address climate change. Continue reading