Sustainablog

“No-till” Soybeans Following Wheat

There is a sub-set of farmers who have been practicing a much more sustainable form of agriculture for decades and we are coming up on the 50th anniversary of it’s beginnings.  I want to start writing about this event early because many environmentally-conscious folk are not aware of this hugely significant “revolution” that has occurred in agriculture over the past half century.  No, I’m not talking about “Organic Farming.” That movement is about a decade older in the US and has had a much smaller impact.  I’m talking about “No-till” agriculture and variants that are focused on reducing the amount of “tillage” or “plowing” that are needed to farm.

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by Lester R. Brown

In April 2005, the World Food Programme and the Chinese government jointly announced that food aid shipments to China would stop at the end of the year. For a country where a generation ago hundreds of millions of people were chronically hungry, this was a landmark achievement. Not only has China ended its dependence on food aid, but almost overnight it has become the world’s third largest food aid donor.

As noted in Plan B 3.0: Mobilizing to Save Civilization, the key to China’s success was the economic reforms in 1978 that dismantled its system of agricultural collectives, known as production teams, and replaced them with family farms. In each village, the land was allocated among families, giving them long-term leases on their piece of land. The move harnessed the energy and ingenuity of China’s rural population, raising the grain harvest by half from 1977 to 1986. With its fast-expanding economy raising incomes, with population growth slowing, and with the grain harvest climbing, China eradicated most of its hunger in less than a decade—in fact, it eradicated more hunger in a shorter period of time than any country in history.

While hunger has been disappearing in China, it has been spreading throughout much of the developing world, notably sub-Saharan Africa and parts of the Indian subcontinent. As a result, the number of people in developing countries who are hungry has increased from a recent historical low of 800 million in 1996 to over 1 billion today. Part of this recent rise can be attributed to higher food prices and the global economic crisis. In the absence of strong leadership, the number of hungry people in the world will rise even further, with children suffering the most.

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Today’s post is by Lisa Moore, a climate scientist at EDF.

NOAA recently released a terrific scientific report that explains, in plain English, the current and projected effects of climate change on the U.S. The nonpartisan report, prepared by the 13-agency U.S. Global Change Research Program, tells a grim but important story, clearly and with lots of powerful maps and charts. I encourage you to check it out to see how climate change will affect your area of the country.

Here are some of the “business-as-usual” projections that my colleagues and I find most striking and disturbing:

You think August is hot now?

By the end of this century, we could be in for much more severe summers all across the country (see maps that follow).

• If you live in New Hampshire, summer could feel like it does today in North Carolina (p.107).
• If you live in Michigan, brace yourself for summers that feel like today’s summers in Oklahoma (p 117).
• And if you live in Texas, you now experience 10 to 20 days a year over 100 °F. By the last two decades of this century, look for 100 such days - that’s more than three months (p. 90).

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If you’ve followed the debate over climate change even a little, you likely know the main causes of global warming: concentrations of greenhouse gases build up in the Earth’s atmosphere, and create a “greenhouse,” or warming effect. You’re likely also aware that evidence of past warming periods has fueled the argument that natural causes are largely responsible for current global warming, and thus, our choices of ways to reduce global warming are limited. If Nature’s calling the shots, is there any reason to change human activities that increase levels of carbon dioxide, methane, and other greenhouse gases?

While arguments persist, there’s little doubt that human-produced greenhouse gas emissions play a major role in the current warming trend. Nature has a role, but it pales in the face of increasing emissions from human activity.

What are some of the natural causes of global warming?

Think back to science classes from school. You undoubtedly learned at some point that carbon dioxide is a naturally-occurring compound, that it provides food for plant life, and that animals breathe it out. You may have also learned that decaying organic material releases CO2. There’s no need to question these facts. Greenhouse gases can be emitted into the atmosphere from a variety of natural sources.

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By Lester R. Brown

Elevated global temperatures bring a number of threats, including rising seas and more crop-withering heat waves. Higher surface water temperatures in the tropical oceans also provide more energy to drive tropical storm systems, leading to more-destructive hurricanes and typhoons. The combination of rising seas, more powerful storms, and stronger storm surges can be devastating.

As noted in my most recent book, Plan B 3.0: Mobilizing to Save Civilization, just how devastating this combination can be became evident in late August 2005, when Hurricane Katrina came onshore on the U.S. Gulf Coast near New Orleans. In some Gulf Coast towns, Katrina’s powerful 28-foot-high storm surge did not leave a single structure standing. New Orleans survived the initial hit but was flooded when the inland levees were breached and water covered everything in large parts of the city except for the rooftops, where thousands of people were stranded. Even in August 2006, a year after the storm had passed, the most damaged areas of the city remained without water, power, sewage disposal, garbage collection, or telecommunications.

With advance warning of the storm and official urging to evacuate coastal areas, 1 million or so evacuees fled northward into Louisiana or to neighboring states of Texas and Arkansas. Of this total, more than 200,000 have not yet returned home and will likely never do so. These storm evacuees are the world’s first large wave of climate refugees.

Katrina was the most financially destructive hurricane ever to make landfall anywhere. It was one of eight hurricanes that hit the southeastern United States in 2004 and 2005. As a result of the unprecedented damage, insurance premiums have doubled, tripled, and even in some especially vulnerable situations gone up 10-fold. This enormous jump in insurance costs is lowering coastal real estate values and driving people and businesses out of highly exposed states like Florida.

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As the earth warms, the melting of the earth’s two massive ice sheets—Antarctica and Greenland—could raise sea level enormously. If the Greenland ice sheet were to melt, it would raise sea level 7 meters (23 feet). Melting of the West Antarctic Ice Sheet would raise sea level 5 meters (16 feet). But even just partial melting of these ice sheets will have a dramatic effect on sea level rise. Senior scientists are noting that the Intergovernmental Panel on Climate Change (IPCC) projections of sea level rise during this century of 18 to 59 centimeters are already obsolete and that a rise of 2 meters during this time is within range.

As I note in Plan B 3.0: Mobilizing to Save Civilization, assessing the prospects for the Greenland ice sheet begins with looking at the warming of the Arctic region. A 2005 study, conducted by the Arctic Climate Impact Assessment (ACIA) team, an international group of 300 scientists, concluded that the Arctic is warming almost twice as fast as the rest of the planet. It found that in the regions surrounding the Arctic, including Alaska, western Canada, and eastern Russia, winter temperatures have already climbed by 3-4 degrees Celsius (4–7 degrees Fahrenheit) over the last half-century.

In testimony before the U.S. Senate Commerce Committee, Sheila Watt-Cloutier, an Inuit speaking on behalf of the 155,000 Inuits who live in Alaska, Canada, Greenland, and the Russian Federation, described their struggle to survive in the fast-changing Arctic climate as “a snapshot of what is happening to the planet.” She called the warming of the Arctic “a defining event in the history of this planet.” Read the rest of this entry »

When the headlines told us that the global warming debate was over, it seemed like we environmentalists could breathe a collective sigh of relief. The United States elected a cap-and-trade-sympathetic administration, and the Environmental Protection Agency says it is going to exert some of the “P” in its acronym after it formally labeled carbon dioxide a pollutant last month. So now that the debate is over, has the discussion ended?

Much of what I assumed to be climate consensus has been turned on its head since I moved to the Midwest from New York. Meaning, there a lot of people here in the Middle who care about environmental issues but are not convinced climate change is related to human activities and/or is as dire as predicted. I believe it is. . .and I also believe that in order to get buy-in from such diverse constituents, it’s imperative that we engage in dialog with those who hold differing opinions.

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It’s hard to watch television, read the paper, or go online without coming across facts about global warming prevention. You may already feel like you’ve got the basics down. Some of the more interesting global warming facts may have escaped your attention, though, as they don’t get quite as much coverage. The more time you spend digging into global warming causes and effects, the more you’ll realize that climate change goes beyond some of the most catastrophic (and newsworthy) problems associated with it. Global warming will transform your life at basic levels that we’re just beginning to understand.

Global warming causes you may not have known about

You’re likely aware that many of your daily activities — driving your car, cooling and heating your home, operating electronic devices — produce greenhouse gas emissions, especially carbon dioxide. You may not, however, be aware of some other major global warming causes that you encounter regularly. For instance,

• The meat on your plate: Deforestation, especially of tropical rainforests, is one of the major causes of global warming, and residents of countries such as Brazil and Costa Rica often destroy these forests to create grazing space for cattle. Choosing to eat less meat, and purchasing the meat you do eat from local sources, should be a part of your plan to lighten your own carbon footprint.
• The food and yard wastes you throw away: When you send food wastes, grass clippings, and other organic materials to the landfill, they’re much more likely to end up producing methane because they’ll decompose in an anaerobic (or oxygen-free) environment. Composting those wastes, whether by sending them to a large-scale operation, or adding them to your own compost pile or bin, will allow for oxygen-rich decomposition… which prevents methane emissions, and “closes the loop” by creating material you can use for garden and plant fertilizer.

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With Congress deep in debate over legislation aimed at the prevention of global warming, and skeptics ramping up their rhetoric, it seemed like a good time to take a step back to some basics — more accurate information is critical here. Step one in figuring in out how we can help in the battle against climate change involves answering questions like “What are the major causes of global warming?”

What causes global warming?

Scientists have understood the greenhouse effect since the early 19th century; the first paper on the topic was published in 1896. Essentially, certain gases trap energy from the sun: according to the Intergovernmental Panel on Climate Change’s Fourth Assessment Report, greenhouse gases “act as a partial blanket for the longwave radiation coming from the surface. This blanketing is known as the natural greenhouse effect.”

What are greenhouse gases?

Several compounds contribute to the greenhouse effect, including

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Things must be getting serious. At least for the planet and the environment. What else would explain the plethora of eco documentaries hitting the film festival circuit or that will hit mainstream theaters in the near future? Many of these green docu films cast a waving finger along with charts and graphs about what will happen to the planet in the future if we don’t act now. The Age of Stupid works a bit in reverse.

The Age of Stupid takes place in the year 2055 with a man called the Archivist (Pete Postlethwaite) sitting in a Noah’s Ark type storage tower with a collection of famous art, pairs of animals, and enough computer servers to make Google envious.  The tower exists because the world has turned into a fiery, and flood ridden disaster area. The Archivist  searches through archived video footage to see where man went wrong after having the opportunity to change things. The film takes futuristic standpoint of looking at the present (like right now). Read the rest of this entry »