Last Monday (November 13), a group of over 15,000 scientists issued “World Scientists’ Warning to Humanity: A Second Notice.” In most quarters, this notice was received politely and has already faded from the news cycle. One researcher complained about the “scaremongering” of the scientists, but much worse was the general silence — a kind of collective yawn — about what the “second notice” says and what we might do.
The key aspect of the warning missed by most reports, was that it suggested that we face limits to economic growth. Here are some salient points. Continue reading
Mark Jacobson, a prominent proponent of renewable energy, contends that we could relatively easily go to a completely renewable economy (wind, water, and solar) by 2050. But not everyone agrees with Jacobson. Last summer, twenty-one scientists headed by Christopher Clack published a paper that was critical of Jacobson’s approach. The heart of the disagreement is not whether climate change is real, but how to deal with climate change.
The upshot of these differing opinions is that Jacobson is now seeking $10 million in damages from Clack and his publisher, claiming that he has been defamed. You may have never heard of Jacobson or Clack, but this lawsuit has important political implications. Continue reading
We don’t have a workable plan to stop using fossil fuels. And NO, renewable energy is not such a plan.
Many are hoping that renewables will save the day, by providing the energy that the economy needs “renewably.” This is what Al Gore, Hillary Clinton, Bernie Sanders, Bill McKibben, and the Sierra Club are relying on. Unfortunately, it’s going to be much more expensive and take longer to achieve than most people think. And when we finally get there, our economy is going to be substantially smaller. Continue reading
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
Al Gore’s new documentary “An Inconvenient Sequel” is well worth seeing. Coming out a decade after “An Inconvenient Truth,” it makes one key point on which we all can agree: climate change is already happening, illustrated with collapsing glaciers, extreme weather events, and more. To his credit, Gore does acknowledge agriculture — in one sentence — but immediately adds that the leading cause of climate change is fossil fuel emissions.
Well, isn’t he right?
I would turn Gore’s statement around: without addressing livestock agriculture, we will not be able to deal with climate change. And here’s why. Continue reading
Remember the very beginning of Cowspiracy, where the producers interview Bruce Hamilton representing the Sierra Club? Hamilton gives a litany of all the dire consequences of climate change, ending with a prediction of “climate wars.” He is then asked, “what about livestock and animal agriculture?” to which Hamilton innocently (and seemingly obliviously) responds, “well, what about it? I mean —”. This is the lead-in to Cowspiracy’s general theme that environmental organizations are either clueless or hypocritically silent about livestock agriculture and the environment.
If the producers of Cowspiracy had showed up at a local Sierra Club meeting last week, instead of interviewing Hamilton, Cowspiracy might have taken a very different turn. Continue reading
The High Park Wildfire, June 10, 2012. U.S. FS photo.
Climate change is a lot worse than we thought. This is catching even the climate scientists by surprise, according to a widely-cited story from the Thompson Reuters foundation. The World Meteorological Association reported record temperatures in June — for the 14th straight month. David Carlson, director of the WMO’s climate research programme, stated that “what concerns me most is that we didn’t anticipate these temperature jumps.” They knew it was bad, just not this bad.
And why do you suppose climate change is worse than anyone thought? Has this question occurred to anyone? Continue reading
We’ve been wondering for some time if major environmental groups would ever react to Cowspiracy, the 2014 documentary making the case that livestock agriculture is the most destructive industry on the planet today.
Well, there’s good news and bad news! The good news is that one group, the Union of Concerned Scientists (UCS), is now publicly discussing Cowspiracy. The bad news is that this comes in the form of a rather strange review which Doug Boucher, a scientific advisor to the UCS, has posted on the UCS web site. Continue reading
Sometimes I hear vegans, in the context of discussions of world hunger, say things like, “on a vegetarian or vegan diet, the world could easily support 10 or 15 billion people.” Actually, I myself have said things like this, so I’m not exactly pointing a finger here. “On a vegetarian diet, the world could undoubtedly support a population several times its present size” (A Vegetarian Sourcebook, p. 137).
Could we, really, support fifteen billion human beings on a vegan diet? Continue reading
Last December, Sailesh Rao published a study on the “Lifestyle Carbon Dividend.” I corresponded with Sailesh about this and have posted the interchange below. I have also posted some of the relevant parts of his poster when my questions related to them. This interview may be a bit technical for some of my readers, but I learned something from this exchange myself and hope that it is helpful. Key quote: ” On average, native forests sequester more than ten times as much carbon per unit area [compared to grasslands or pasture lands].” Continue reading
In case you don’t have time to read through Sailesh Rao’s paper on “the lifestyle carbon dividend” (see previous post), you’re in luck. Sailesh has a video about his paper (about 10 minutes). This video is his introduction of the documentary “Cowspiracy” to the European Parliament. I almost missed it because I thought to myself, “I’ve already seen ‘Cowspiracy,’ so I don’t need anyone to ‘introduce’ the movie to me.” Well, it is an introduction to “Cowspiracy,” but it’s more than that. Continue reading
Last December, Sailesh Rao and two of his colleagues made a presentation to the American Geophysical Union, entitled “The Lifestyle Carbon Dividend.” The key point of this paper was that by simply stopping livestock agriculture, we could sequester a lot of carbon and thereby decrease the carbon dioxide levels of the atmosphere. The reason is that grazing land occupies much of the planet’s surface today. In the absence of livestock agriculture, much of this area would revert to forests, which incorporate much, much more carbon than grasslands or pasture. How much carbon could we sequester in these new forests? More carbon than has been released into the atmosphere since 1800. Continue reading
In case you’re in Denver this Tuesday (September 29), I’ll be giving a talk at the University of Denver on “Environmental Destruction and Livestock Agriculture,” sponsored by the DU Environmental Team. It will be at 8 p. m. in room 253 of Sturm Hall (2000 E. Asbury Ave, Denver, Colorado). There will be a quick overview of basic environmental issues relating to the livestock industry, such as climate change, resource depletion, and mass extinctions. It’s free and there will be vegan goodies served. For more details, check out the Denver Vegans Meetup site.
A key cause of climate change
There is now more megafauna biomass (the total biomass of all large animals that are heavier than about 100 pounds) than there has been in recent earth history — indeed possibly in all of earth’s history. It seemed to be fairly constant at 200 million tons for literally hundreds of thousands of years. Then, starting with the industrial revolution and the huge surge in human population and the population of domestic livestock, megafauna biomass has exploded. It is currently about 1500 million tons, over seven times as much. And almost all of this increase has happened just since the industrial revolution.
Whoa! How did this happen? And do you think that all this extra animal biomass would affect carbon dioxide levels? Continue reading
Extinction is a hot topic these days. Megafauna — those “big animals” whose average size is 100 pounds or more — are going extinct at an alarming rate. There is huge popular sympathy for elephants, whales, tigers, giraffes, apes, and other animals endangered by human activities. At the same time, we face a huge paradox: there is more megafauna biomass now than there ever has been for past 100,000 years or so. How can megafauna become more prolific and yet so many species be faced with extinction?
There’s a simple explanation. The cause of megafauna extinctions is one particular megafauna species, namely us, and a number of other species that we have brought into existence, namely our livestock. Continue reading