Showing posts with label carbon emissions. Show all posts
Showing posts with label carbon emissions. Show all posts

Sunday, August 13, 2017

Common-Sense Solutions and Win-Win Situations

Yesterday I heard an online presentation by Paul Hawken, a long-time expert on integrating environmental concerns (particularly carbon emissions) into economics. His theme, including that of his new book Drawdown, has consistently been that solving the global warming crisis doesn’t cost; it pays. In particular, he says that the most important things we can do are things we are already doing for other reasons, and things that will save us money in the long (or short) term. Although this book has been criticized (Science, 26 May 2017, page 811) for the questionable way in which the actual numbers were calculated (no one can produce an adequate numerical summary of the whole world economy), no one disputes the general conclusion. (I have not provided hyperlinks to the Science articles, which are only available to subscribers, even the news items and book reviews.)

Here are some particularly good examples that caught my attention.

  • One of his photos showed a Bolivian woman who lives on a floating mat of straw in Lake Titicaca. She had been heating her grass hut with a kerosene lamp, which poses an obvious fire hazard. She had just received a solar panel and was very happy. She was probably not thinking, “At last, I get to do my part in reducing global warming!” The solar panel helped her life and, incidentally, helped to reduce global warming.
  • Another photo showed cows eating kelp. Apparently, this helps them grow bigger because kelp is converted to animal mass more efficiently than is grass. The cattle produce more meat and less methane. Incidentally, methane is a potent greenhouse gas.
  • Another point was that by reducing food waste, and by having a diet that is more plant-centered (contains less meat), we can feed more people and be healthier, a double win. Incidentally, it also means we will produce less agricultural carbon dioxide and methane. Hawken’s calculations do not include methane from landfills where the food waste is dumped.
  • Having more efficient cooking stoves in rural India will make everyone’s lives better, because the people (mostly women) will have to spend less time gathering firewood, and they will be healthier because their huts will have less smoke. Incidentally, this also reduces carbon emissions.
  • A lot of methane emission comes from rice paddies that are kept flooded (anaerobic) throughout the growing season. But by periodically releasing the water, the growth conditions become aerobic and the plants grow better. Incidentally, the aerobic conditions result in lower methane emissions.


One proposed solution to global warming is carbon sequestration, that is, to burn fossil fuels in power plants but then to scrub the carbon out of the effluent. This was, until very recently, an expensive process, using up to 30 percent of the electricity that the power plant produces. But recent technological advances have greatly improved the efficiency. You can read about one of these on page 796 of the 26 May 2017 issue of Science. Another idea, described on page 805, is to use the carbon dioxide itself, rather than steam, to turn the electrical generation turbine blades.

And the technological innovations go on and on. In California, scientists have improved on the efficiency of algal biomass production for fuel (see the 14 July issue of Science, page 120). We currently use corn biofuels in most of our gasoline, which is a government perk that corn farmers love, but corn biofuel does not reduce carbon emissions very much. We now have improved methods of cellulosic biofuel production, for instance in switchgrass. Switchgrass and other cellulosic biofuels can be produced without cultivation, and without fertilization, in marginal land, leaving the good farmland to raise food (such as corn) for people (see Science, 30 June 2017, page 1349).

But none of this matters, because the Trump Administration has removed all incentives for reducing carbon emissions. Just when we were about to meet the goals, the goals vanish. American ingenuity down the drain.

The best example of all was that allowing women in poor countries to have access to education and to contraception greatly improves their lives because they can then have fewer children (and provide more resources and attention to the (usually) two that they do have). Their lives are vastly improved. According to Hawken’s calculations (similar to those of Michael Bloomberg, J. P. Morgan Chase, and the World Bank), helping women in poor countries is the single most significant factor in reducing greenhouse emissions.

What’s there not to like?

Win-win and common-sense solutions almost never work because, while they are in the interests of almost everyone, they are not in the interests of political and religious leaders. Political leaders think only of how they can get more power or campaign contributions. And religious leaders (such as fundamentalist Christian and Muslim preachers) actively oppose birth control. The blindness created by and parasitized by our political and religious leaders will keep us from even doing the things that would make life better for all of us for reasons unconnected to global warming. Led by the United States, the world will plunge into a global warming nightmare.

Dieter Helm’s Burn Out (reviewed in Science, 19 May 2017, page 709) explains that our economy will shift away from fossil fuels unless, or even if, we actively try to keep it from doing so. I hope that the dedicated efforts of the conservatives does not totally prevent this from happening.


What hope can we have if, each day, we are relieved when President Trump has not yet started a nuclear war?

Saturday, July 8, 2017

Is There Any Hope for the Climate Future?

As I have previously written (see the Real Ecology Manifesto at this permalink), I believe that there is no hope for the world to avoid climate catastrophe, from which the human species will survive, but human societies will not; and from which the Earth, even though minus many of its species, will recover. Nevertheless, I also believe that we need to live in such a way that, as individuals, we do the best work we can at avoiding this catastrophe. That is, even if there is no hope, we can feel that we have lived in the right way (and we can stand before God, if there is one, in the knowledge that we have done the best we could).

We cannot do this if we know our actions to be utterly futile. But what if I am wrong, and there is hope? Or, what if the good things we do will reduce the intensity of the inevitable catastrophe? What we need is some good news, even if the news is not good enough for us to be fully optimistic. But this news has to be factual, not just a fleeting hope.

The Citizens’ Climate Lobby (which consists of citizens who want to effect federal-level policies that will reduce the risk of climate catastrophe, and who know that the apostrophe belongs at the end of the word citizens’) had an online national meeting today, in which Drew Jones, the co-founder of Climate Interactive, gave us some reasons to be optimistic. I happen to believe these reasons are not good enough, but they are verifiably true. I hope that I am wrong in my cynicism, and if I am, these will be the reasons. Here are some of them.

  • While Trump has pulled America out of the international climate accords, many cities and states have declared their intention to follow the Paris guidelines. More than half of Americans live in cities or states (or both) that have declared their willingness to cooperate with the rest of the people in the world by reducing carbon emissions.
  • World carbon emissions have actually stabilized in the last three years, after decades of not only increasing but accelerating. In 2013, global carbon emissions increased by 2.0 percent over 2012; by 1.1 percent in 2014 over 2013; and actually decreased by 0.1 percent in 2015, compared to 2014, in a report prepared by the Netherlands for the European Union. It is not enough to just stop increasing our carbon emissions, but this leveling-off of carbon emissions has happened seldom since records have been kept. Meanwhile, global atmospheric carbon dioxide levels (not the same thing as carbon emissions) continue to increase, from 405 ppm in 2015, to 409 ppm in 2016, to 413 ppm in April of this year.
  • As of today, the Climate Solutions caucus in the U. S. Congress, in which members of both parties agree to do something to reduce carbon emissions, has 24 Democratic and 24 Republican members. (Anyone who joins needs to partner with a member of the other party.) Of course, these few Republicans are easily ignored by the leadership of their party. (John Huntsman said “Call me crazy, but I believe what the scientists say about evolution and global warming.” Guess what. His party called him crazy!) But at least a few responsible Republicans exist!
  • China’s use of coal has declined slightly.
  • The Paris Agreement still has 194 signatories even after the United States has pulled out.
  • Perhaps the most important point is that long-term social change looks impossible until it happens. For example, state bans on interracial marriage seemed like they would never be lifted until the 1967 Loving v. Virginia case, in which the Supreme Court handed down a unanimous decision that interracial marriage must be permitted. If you were a black person in South Africa in 1985, it might have seemed that apartheid would never end, but within a decade it ended. A social consensus that we must do something about global climate change is building, and could quickly become the norm. As Gandhi said, “First they will laugh at you then they will ignore you then they will fight you then you will win.”


I must point out, though, that social change doesn’t always work. As explained by Peter Watson in The Great Divide, a quixotic attempt to summarize all of world prehistory and history, human sacrifice used to be the norm in all known prehistoric societies. In the Old World, in separate locations, human sacrifice was replaced by animal sacrifice and finally by the elimination of physical sacrifice, as religious awareness grew. In the New World, however, human sacrifice grew at a dizzying pace, so that the Aztecs carried out entire wars just to get sacrificial victims; they captured tens of thousands of victims each year, cut their hearts out, threw the hearts in a bowl, tumbled the bodies down the pyramid steps, and made stew out of the bodies. There was a brief attempt by one Mayan leader, Topiltzin Quetzalcoatl, starting about 968 CE, to bring the vicious cycle of human sacrifice to an end. But he failed. Human sacrifice ended only with the conquest of the Aztecs by the equally brutal Spaniards—brutal, but at least they didn’t carry out human sacrifice.

I will add one of my own to Drew’s list. The other major economies of the world recognize that Trump’s refusal to cooperate on climate issues makes America an outsider. Some of the G20 nations now refer to the group as the G19 + 1. It is possible that international pressure will make enough people rethink their position and at least cooperate with the rest of the leading nations of the world. This is extremely unlikely; I think America will cooperate with the rest of the world only if forced to do so. But, again, I hope I am wrong.

What will NOT happen is that Christian Americans will suddenly feel the Spirit of God calling them to show love to their fellow humans and to God’s Creation by preventing climate catastrophe. Some Christian Americans feel this way; most do not, and are in fact furious at their fellow Christians who do. To wait for this to happen would be like waiting for a decomposing bone to turn back into a cow.


Join with me in trying to make the world a better place for everyone, even if this effort fails, and just in case it succeeds!

Wednesday, November 12, 2014

A Carbon Ghost Follows Me Around

I keep trying to think of ways of conveying to my students the magnitude of our human impact on the Earth in some form that they can understand. I have my botany students calculate their annual carbon footprints, and the amount of carbon dioxide a tree might absorb during a year (based on their actual estimates of the leaf area of a tree). They are briefly astonished at the number of trees that it would take to offset their carbon production. I think this works, but I get the feeling that they just go through the calculations (which even science majors do incorrectly) and then forget all about it.

Let me try something new. I don’t know if it will help, but I can give it a try.

First, I calculated my carbon footprint, using The Nature Conservancy calculator. Their estimate of my carbon production (31 tons a year) exceeds that of the average American (27 tons) I suspect mainly because I do a lot of driving, even though it is with a small car. The world average is 5.5 tons. This is in CO2 equivalents; that is, the CO2 used to manufacture items, grow and process food, and run power plants.

Second, I calculated the amount of carbon dioxide I breathe out. According to one online estimate, a person breathes out 350 kilograms of carbon dioxide a year. This would be about 0.3 metric tons, which is pretty close to English tons.

That is, I produce a hundred times as much CO2 by my activities as I do by breathing. I can therefore try to imagine that, wherever I go, a ghost a hundred times my size is following me around emitting carbon. That is, a hundred times my volume; it would be about 4.6 times as tall, as wide, and as thick. My pet carbon-ghost, chained to me day and night. Maybe a creepy image, buy possibly one that I can use for myself and for my students. I can have them calculate their carbon footprints in tons per year, divide by 0.3, and this is their carbon-ghoul.

I tried this as an extra credit assignment for my students. Many of them did it, since it was quick and easy. I do not know how many of them really thought about the image that they produce a hundred times as much carbon emissions by what they do as by breathing out.