Archive for the ‘Biology and Biodiversity’ Category

Weekend Book Review: Animal, Vegetable, Miracle


Animal, Vegetable, Miracle is the true-life chronicle of author Barbara Kingsolver’s decision to move to an Appalachian farm and eat locally produced, organic goods for one year. She explains that her highest shopping goal was to “get our food from so close to home that we’d know the person who grew it.” Her husband and two daughters joined her on this journey.

The family raised an astonishing array of vegetables, fruit, meat, and eggs. They did buy supplies like flour, coffee, and olive oil from the grocery store, but they were able to grow the vast majority of their food at home or buy from locals. Besides Kingsolver’s accounts of the ups and downs of pulling weeds or dodging testosterone-crazy roosters, husband Steven L. Hopp provides fascinating food facts sprinkled throughout the book. He explains that if we all ate just one meal each week made of locally raised organic meat and produce, we could reduce our country’s oil consumption by over 1.1 million barrels of oil per week. Kingsolver’s nineteen-year-old daughter Camille offers sidebars of meal plans and recipes (my looming zucchinis thank her for the zucchini chocolate chip cookie recipe).

Steven and Camille’s practical commentary provide a good balance to the author’s more subjective arguments for eating seasonally. For example, Kingsolver implies that the reader will have a greater appreciation for food if they can’t eat apples in January, or that hours spent in the kitchen canning vegetables with the family is a happy time that brings you closer. It sounds great to me, but other readers may be swayed less by a touch-feely argument, and more convinced by the scientific health arguments for organic foods and the greater energy independence local foods bring (a typical meal travels 1500 miles to a dinner table). At times, I did get a bit tired of seeing Kingsolver’s world though the rosiest of glasses. Everything appears to be perfect, lush, beautiful, the most delicious, faster, stronger, healthier. I don’t doubt the superior taste and nutrition of locally grown, organic products, but I was waiting for another side to the story – some sort of significant downside or obstacle they had to overcome. The author admits this herself when she recounts telling a friend about a tranquil summer evening spent with Amish friends on a farm. The friend remarks, “What, not even a mosquito to bother heaven?” But perhaps Kingsolver’s point is that it is easier than we think to eat locally. In spite of the endless positive spin, her humor and thorough research were inspiring enough to get me to contemplate making my own mozzarella.

A thought-provoking surprise was Kingsolver’s adamant argument for eating meat – specifically locally bred, organic meat. She aligns herself with a vegetarian position, she says, except that she eats meat. She points out that “every sack of flour and every soybean-based block of tofu came from a field where countless winged and furry lives were extinguished in the plowing, cultivating, and harvest…To believe that we can live without taking life is delusional.” She goes on to explain that the oft-repeated argument that it takes ten times as much land to make a pound of meat as a pound of grain only applies to the kind of land where rain falls abundantly on rich topsoil. Cultures that live on less productive land like the Navajo, Mongols, Lapps, and Masai would starve without their animals. The argument for eating locally produced organic meat is perhaps a more realistic option for individuals who care about where their food comes from and its environmental and energy consequences, but who aren’t going to stop eating chicken or burgers tomorrow.

In the end, Animal, Vegetable, Miracle has a little bit for everyone. For those ready to set the loftiest goals, take the Kingsolver challenge of canning all fall and making meals from home seven days a week. For someone like me who has a love of food, gardening, and cooking, but who isn’t prepared to give up Cheerios (are they local if General Mills is located 20 miles from my house?), I walked away with a renewed dedication to my farmers’ market, an intensive search for local foods at my grocery store, and the knowledge that buying food that grew up continents away is as much of an energy decision as leaving the lights on.

House Bill Threatens Wind Power

Last week, the U.S. House of Representatives’ Natural Resources Committee held a hearing on H.R. 2337, The Energy Policy Reform and Revitalization Act. The bill, according to the nonprofit Alliance to Save Energy, promotes alternative energy and efficiency, including a green building program that would require all major new facility construction projects funded in whole or in part through the Department of the Interior, National Ocean Service, National Marine Fisheries Service, or the Forest Service to meet or exceed silver level LEED standards.

But a provision in the bill has other clean energy supporters up in arms.

Subtitle D, called the Global Warming Wildlife Survival Act, would require new hoops and hurdles for wind power production. The American Wind Energy Association says the law would “effectively shut down the wind energy production industry in the United States,” and House members of both political parties questioned why the wind industry should face new requirements that have never applied to other energy sectors. Some of those requirements include:

  • Directing the U.S. Fish & Wildlife Service (USFWS) to review every existing and planned wind project and penalize operation of wind energy facilities not formally certified by USFWS.
  • Landowners and farmers with wind turbines on their property would be subject to inspection requirements at any time.
  • Landowners and farmers could face one year in jail or a $50,000 penalty for constructing or operating an uncertified wind turbine, regardless of whether it is for personal or commercial use.

In response to the Global Warming Wildlife Surivial Act, the wind industry points out that it is working with wildlife advocates, government officials, and scientists on a Wind Turbine Guidelines Advisory Committee to examine a national strategy for siting turbines. These stakeholders should decide how best to protect wildlife and support the growth of clean wind power, AWEA says, not Washington bureaucrats.

A report released by the National Academy of Sciences earlier this month concluded that wind turbines cause about .003 percent of human-caused bird mortality. That’s about one thousand times lower than bird deaths from house cats. Previous studies have come to similar conclusions. The report also points out that the locations of wind farms must be sited carefully to minimize the negative impacts on birds and that each wind project should be considered on its own merits. The Audubon Society’s Director of Conservation Policy, Mike Daulton, testified before Congress on May 1 that turbine siting must be done cautiously to minimize the impact on wildlife, but did not discount wind power entirely:

“As the threats of global warming loom ever larger, alternative energy sources like wind power are essential. Many new wind power projects will need to be constructed across the country as part of any serious nationwide effort to address global warming…Audubon strongly supports wind power as a clean alternative energy source that reduces the threat of global warming. Each individual wind project, however, has a unique set of circumstances and should be evaluated on its own merits.”

Committee Chairman Nick Rahall (D-WV) introduced H.R. 2337. West Virginia is the second largest supplier of our nation’s coal.

Further action is scheduled for June.

Alliance to Save Energy
American Wind Energy Assocation
Audubon Society
United Press International
West Virginia Coal Association

The Green Options Interview: Will Steger, Polar Explorer

Courtesy of WillSteger.comCourtesy of WillSteger.com

Will Steger, famed polar explorer whose feats include the first confirmed dogsled journey to the North Pole without re-supply, the longest unsupported dogsled expedition in history (1,600 mile south-north traverse of Greenland), and the first dogsled traverse of Antarctica, is now on a new mission. He is an eyewitness to the impacts of global warming, both in the Polar Regions and in his home state of Minnesota. A former science teacher, he has set out to educate people on global warming and the solutions needed to slow it. He returned last week from a four-month trek by dogsled across Baffin Island in the Canadian Arctic to interview the Inuit people, who have had to adapt quickly to a new lifestyle because of climate change. Steger will use these interviews to produce a documentary later this year.

I spoke with Will by phone on May 15th. He was in Iglulik, Nunavut; the last stop of his expedition.

Green Options: You’ve traveled both Polar Regions extensively and have documented how climate change is drastically changing their landscapes. What was different about this trip?

Will Steger: This was a new route for me because this was a cultural expedition. We specifically planned the route so we could visit as many villages and talk with as many people along the way as possible. We know global warming is happening and we want to put a human face on it. So we spent a lot of time in villages. Our team included myself, three team members, and three 50- or 60-year-old Inuit hunters. We talked with hundreds of people.

Baffin Island, where I traveled, is like ground zero of global warming because there’s an intact culture that relies very heavily on their surroundings to survive. Changes are noticed almost immediately. Up here, global warming is showing itself most drastically out on the sea ice. As the earth warms, 80 percent of that energy goes into the ocean, which then affects the ice cover. The Inuit are seeing the ice freeze six weeks later, along with earlier break ups of the ice. Generally, the Inuit have had about 8 months where they are able to travel on the ice to hunt, and now that’s cut down to 5 or 6 months. That’s a 25 percent reduction in the amount of time they have to hunt out on the ice, which acts like an extension of their land.

GO: Are the Inuit angry? It is industrialized countries’ pollution that has caused this.

WS: Everyone is talking about global warming up here, there’s no denial about it. But the Inuit are forgiving people. Many of them aren’t worried about it because they can’t change it, and they don’t worry about things they can’t change. They understand that the polluters are industrialized nations, but in general they don’t harbor a lot of anger. They wish we would change, but they’re pretty easy going.

But we still have to take responsibility. Our way of consuming energy is really causing this, and we need to change to avoid the worst of the consequences.

GO: You’ve documented the changes up there before; did anything surprise you about this trip?

WS: Let me first say that no single event “proves” global warming. Global warming is an accumulation of changes happening over time. That said, I did see an effect that really surprised me, and everyone up there was talking about it: There is a large sound called Cumberland Sound. It’s about 50 miles wide and 125 miles long, and we were going to cross it on this expedition. But the ice broke up from the swells from a super storm in the North Atlantic. Everyone was talking about that. So we had to go around it, which was an extra 75 miles. That’s not a major hardship for the team, but it is for the Inuit communities because they depend on the sound for commercial fishing. Now it has shattered the fishing industry. It isn't just abou the environment; it’s the fact that it affects the economy and survival of this entire community.

Another impact really struck me. There’s a place up here they call the “land where ice never melts.” Well, it is melting. The glaciers are shrinking. That was incredibly powerful to see.

GO: Seeing all these impacts from climate change, was this trip depressing or invigorating?

WS: Neither. It was reaffirming: We were ground-truthing the science.

You have to understand that this Inuit culture does not think the way we do. Their world is close to the land. They talk in minute details of the changes in the salt in the sea ice, details that aren’t even in the climate change models. You rely on a lot of satellite info up here, but there aren’t a lot of scientists.

GO: How do the Inuit talk about global warming?

WS: Many of the elders will say the earth’s axis has changed because the sun is rising in a different place. But what’s really happening is that, because our warming planet causes more water to be absorbed up into the atmosphere, they are seeing a diffraction of the sun. It’s like an optical illusion caused by global warming. They also say that the sky color has changed: it’s now a whitish blue in the winter rather than a deep blue. In the wintertime up here, the sun doesn’t rise. But now the Inuit say the light is getting brighter in the winter. Again, the water vapor is diffracting the light in the atmosphere, making it seem lighter.

GO: What are your next steps after you return to the States?

WS: We have a lot of film from our expedition up here. We’ll be heading out to Los Angeles to start producing the documentary. In the summer, we’ll be back up to Baffin Island to do more interviews with the elders.

I’m also back on the global warming campaign trail in November, along with Fresh Energy, an energy policy organization with which I partner. We’ll be educating folks on solutions, specifically speaking a lot with congregations in the faith community.

Governor Tim Pawlenty appointed me to sit on Minnesota’s Climate Change Advisory Group. I’m working with about 50 other people from industry, environmental groups, local and tribal governments, transportation, and agriculture to develop a climate change action plan for the state.

I’ll also be working more with high school students, which I’m very excited about. They must feel empowered to fight this. They’re not taking on the challenge yet, but I think it’s going to happen soon, and I want to be part of it. I want to do now what we did 30 years ago during the Vietnam War; create a movement with young people. That’s when we’re going to see real change.

 

Cross posted at Maria Energia 

Yet Another Wind Power Design

A seemingly simple alteration a wind turbine blade’s traditional shape could result in huge improvements in efficiency.

WhalePower Corporation out of Toronto, Canada has designed a turbine blade with rounded, teeth-like bumps along the leading edge. The company’s name is a nod to the humpback whale, whose flipper was the inspiration for the design.

The agility of the humpback whale is astonishing, given that they can be over 50 feet long, weigh nearly 80,000 pounds, yet move quickly and tightly in the water. One of the animal's advantages, according to scientists, is the unique row of bumps or “tubercles” along the leading edge of their flippers that dramatically increase the whale’s aerodynamic efficiency. Specifically, researchers found a 32 percent lower drag and 8 percent improvement in lift from a flipper with a serrated edge compared to a smooth one.

Businessman Stephen Dewar heard about the humpback research and contacted one of the scientists involved, Professor Frank Fish of West Chester University in Pennsylvania. After a few meetings, they enlisted the help of some local engineers and formed WhalePower, taking a cue from Mother Nature and modeling their blade design after the whale’s flipper.

WhalePower claims that their turbine design can capture more wind energy at much lower speeds than traditional designs. The channels created by the teeth at the blade's edge cause separate wind streams to accelerate across the surface of the blade in rotating flows. These “energy-packed” vortexes increase the lift force on the blade. For example, Dewar told the Toronto Star that this design produces the same power at 11 miles per hour that one would expect at 18 miles per hour. Furthermore, he claimed these channels prevent airflow from moving along the span of the blade and past the tip, which can create noise, instability and a loss of energy. By keeping the air flow nicely channeled, more wind is captured and noise is reduced.

Dewar sees this “biomimicry” design – the fusion of biology and engineering – reaching beyond wind power.

“’This changes the game,’ says Dewar, adding that any system using a fan or turbine could also benefit from the new design. This includes everything from better turbines for hydroelectric generation to residential ceiling fans that use less electricity. ‘If we've got what we think we've got, then the range of applications is staggering.’”

The Ontario Centres of Excellence and the Ontario Power Authority have contributed over $60,000 USD for early research and to encourage collaboration with a wind engineering group at the University of Western Ontario. The next and arguably most crucial step to commercial production is independent, third party verification of the blade’s performance.

Toronto Star
Wikipedia

Cross posted at Maria Energia

IPCC to Release Global Warming Mitigation Report Today

Today the fourth and final assessment from the United Nations’ Intergovernmental Panel on Climate Change (IPCC), “Mitigation of Climate Change,” will be released. More than 400 scientists and experts from 120 countries are in Bangkok, Thailand this week to finalize the report. The summary of Mitigation of Climate Change will be posted here; go here for a live webcast around 1PM local time. The full report will be released in September.

The report will lay out ways to cut global warming emissions and prevent the worst impacts without seriously hurting the global economy. In fact, it is expected to show that the cost of doing nothing is far higher than the cost of taking action now.

On Wednesday, the Taipei Times reported that talks were stalled by China, India, and Brazil, who insisted that industrialized nations take more responsibility for their pollution contribution. The stalemate took up other time meant for discussion on how to best tackle global warming. One European delegate reported:

"Progress is slow…Brazil, India and China are trying to put on the shoulders of industrialized nations the historic responsibility for greenhouse gas emissions in order to clear their own emissions [of blame] and to protect themselves in any discussion.”

The report will assess not only the long-term options available for the next 100 years, but a range of economic, technological, and institutional solutions and covering short and medium-term timelines up until 2030, explained Dr. R.K. Pachauri, Chairman of the IPCC.

Intergovernmental Panel on Climate Change
Taipei Times
World Wildlife Fund

Achtung: Global Warming Melts Germany’s Last Glacier

Glaciers are considered “global thermometers” and their shrinking numbers are watched closely by climate change scientists. Germany’s glaciers are suffering a faster fate than many, and locals dependent on the Zugspitze glacier for their livelihood are struggling to slow its demise.

In an area known for its winter skiing, and in a nation dependent on glaciers for drinking water, the melting of Germany’s last glacier is spurring some innovative – some say futile – attempts to save it. Giant anti-glare shields have been spread over the glacier each spring for the past 14 years, with tons of loose snow piled on top. The shields deflect the sun, keep the surface cool and shield the glacier from warm summer rain that speeds the melting. During the winter months, workers set off explosives to generate controlled avalanches on surrounding slopes to push snow onto the glacier and fences are erected to slow wind erosion. But the end is still inevitable, said the Zugspitze’s cable car operator, Frank Huber:

"We're doing all we can to preserve it as long as possible, but I'm not God and there's only so much we can do…the other things we're doing are only going to slow the process down a little bit. We aren't going to be able to save it….I grew up with the glacier and it's sad to think one day my children's children won't know what it feels or looks like.”

No one will say how much these efforts cost, other than that the investment is considerable.

Scientists report that rising global temperatures from climate change are causing the melting. The United Nation’s Intergovernmental Panel on Climate Change has also stated that small alpine glaciers will disappear while larger glaciers will shrink 30-70 percent by 2050. The Zugspitze glacier was over 260 feet thick in 1910, compared with less than 150 feet thick today.

In the U.S.’s Glacier National Park, only 27 glaciers are left, down from 150 in 1850. Some estimates predict the park will be without glaciers by 2030.

CBS News
Reuters, via CNN

Global Warming Threatens U.S. National Security

In a report released on Monday and on the heels of the first debate in the United Nations Security Council on the issue, 11 retired U.S. military leaders assert that climate change raises risks and tensions in the world’s most volatile areas, and the U.S. needs to start planning and cooperating with other nations to mitigate and respond to those risks. From the Associated Press:

“The report warns that in the next 30 to 40 years there will be wars over water and increased instability from hunger, worsening diseases, rising sea levels and global warming-induced refugees. ‘The chaos that results can be an incubator of civil strife, genocide and the growth of terrorism,’ the 35-page report predicts.

‘Climate change exacerbates already unstable situations,’ former U.S. Army Chief of Staff Gordon Sullivan said. ‘Everybody needs to start paying attention to what's going on. I don't think this is a particularly hard sell in the Pentagon. … We're paying attention to what those security implications are.’

Gen. Anthony Zinni, President Bush's former Middle East envoy, said in the report: ‘It's not hard to make the connection between climate change and instability, or climate change and terrorism.’”

The leaders urged the U.S. to take action now, without waiting for a total certainty on global warming’s impacts. Extreme weather like drought, flooding, rising sea levels, and shifts in habitat for plant and wildlife are some of the expected consequences. Any of these could prompt U.S. military involvement; for example, the U.S. and Europe may have to accept environmental refugees from Latin America and Africa as drought increases and food production declines. Climate change impacts could also make life more difficult in unstable locales like parts of Africa, Asia, and the Middle East, perhaps driving the U.S. more frequently to provide stability before conditions are exploited by extremists.

Although the U.S. is the planet’s biggest emitter of global warming pollution, the report stressed that it does need to develop strong partnerships with other nations like China and India, who will be contributing significantly to the global economy and to its emissions.

The report was published by the non-partisan CNA Corporation think tank.

Associated Press, via the Atlanta Journal-Constitution
CNA Corporation
Globe and Mail

Mitigate and Adapt: The IPCC Global Warming Report

Yesterday the Intergovernmental Panel on Climate Change (IPCC) released its second report of the year on global warming. Back in February, the IPCC explained the scientific consensus on human-caused climate change. This time, we learn the impacts.

For increases in global mean temperature of less than 1-3 degrees Celsius above 1990 levels, impacts may produce benefits in some places and some sectors, and produce costs in other places and sectors. However, some low latitude and polar regions of the world will see net costs rise even with only small increases in temperature. Once the average temperature increases more than 2-3 degrees Celsius in any region, however, it is “very likely” that we wil see declining benefits and instead see an increase in net costs.

The Summary for Policymakers of the Impacts, Adaptation, and Vulnerability reports the projected effects of climate change:

  • Costs and benefits of climate change for industry, settlement, and society will vary widely by location and scale. In the aggregate, however, net effects will tend to be more negative the larger the change in climate.
  • Crop productivity is projected to increase slightly at mid to high latitudes for local mean temperature increases of up to 1-3 degrees Celsius depending on the crop, and then decrease beyond that in some regions.
  • Studies in temperate areas have shown that climate change is projected to bring some benefits, such as fewer deaths from cold exposure. Overall it is expected that these benefits will be outweighed by the negative health effects of rising temperatures world-wide, especially in developing countries.
  • Approximately 20-30 percent of plant and animal species assessed so far are likely to be at increased risk of extinction if increases in global average temperature exceed 1.5-2.5 degrees Celsius.

Each word of the report had to be agreed upon by consensus, but disputes between the scientific authors and diplomatic editors infuriated some scientists. They claim the predicted impacts have been watered down because of political interference. For example, a sentence that originally said scientists had “very high confidence” (greater than 90 percent) that many natural systems would be affected by rising temperatures was changed to “high confidence” (greater than 80 percent) at the insistence of delegates from China and Saudi Arabia.

The report goes on to say that global warming cannot be stopped at this point, only slowed down. However, the most catastrophic effects can still be avoided with swift and decisive global action. The IPCC recommends a combination of adaptation and mitigation measures:

Even the most stringent mitigation efforts cannot avoid further impacts of climate change in the next few decades, which makes adaptation essential, particularly in addressing near-term impacts. Unmitigated climate change would, in the long term, be likely to exceed the capacity of natural, managed and human systems to adapt.

This suggests the value of a portfolio or mix of strategies that includes mitigation, adaptation, technological development (to enhance both adaptation and mitigation) and research (on climate science, impacts, adaptation and mitigation).

The full report will be released next week. It includes more than 2,500 scientists appointed by more than 130 countries.

The IPCC was created by the World Meteorological Organization and the United Nations Environment Programme to assess the scientific, technical, and socio-economic information relevant to understanding the scientific basis of risk for climate change, along with its potential impacts and options for adaptation and mitigation. Its assessments are based solely on peer reviewed and published scientific/technical literature.

CNN
Impacts, Adaptation, and Vulnerability: Summary for Policymakers
Intergovernmental Panel on Climate Change

Canada Cuts Trees from Global Warming Calculations

As a signatory of the Kyoto Protocol, Canada has committed to cutting global warming emissions to 6 percent below 1990 levels by 2012. But emissions have climbed, and the northerly nation is nervous about forest fires that release carbon dioxide (CO2) back into the air when the trees burn, thus increasing CO2 emissions even more. As a result, Canada has decided to cut its forests from global warming emissions calculations completely.

This also means that Canada won't count forests as a CO2 absorber or "sink," either. That's just fine for some scientists: According to the Toronto Star, for three years between 1990 and 2004, trees were a net source of emissions rather than a CO2 sink.

“Government scientists made the call after learning of the damage that could come to forests from 2008 to 2012 and realizing the forests could become another source of emissions, pushing Canada even further from its Kyoto targets.”

Insect infestations have contributed to forest fires also: an insect like the mountain pine beetle burrows into a tree and prevents it from drawing water, killing it and turning it into kindling.

The Kyoto Protocol gives nations the option of using agricultural land and managed forests (ones that are regularly cut down and replanted) in their emissions calculations. Although forests should theoretically be a great source of storing carbon in such a forested country like Canada, a hotter planet has changed that assumption.

Some environmentalists are angry about the decision, saying Canada is skirting its Kyoto responsibility.

A spokesman for Environment Minister John Baird said that the decision to not count forests only applies to Kyoto’s first commitment period, which ends in 2012. After that, Canada may reassess its decision.

The Toronto Star, via the Daily Canuck

Lots of Room to Sequester CO2

According to the U.S. Department of Energy, the U.S. and Canada have enough geological storage capacity to sequester about 3500 billion tons of carbon dioxide (CO2) underground. That’s about 900 years worth of CO2 emitted by power plants.

Carbon sequestration is the process by which CO2 is captured from a source (like a power plant) before it’s released into the air and pumped into an underground rock formation. This is called geological sequestration. Another type of carbon sequestration is terrestrial sequestration, where the carbon is stored in long-lived sources like trees or soils, for example.

A new Carbon Sequestration Atlas reports that 4,000 power plants and other stationary CO2 sources are located above sequestration sites. Dawn Deel, a carbon sequestration manager at the National Energy Technology Laboratory (NETL) said that most power plants would have the capacity to store CO2 nearby or directly underneath them. She told Reuters: “The capacity sites are very widespread. They cover the majority of the area in the United States and a good bit of Canada.”

But one of the major hurdles of sequestration – the enormous cost – was not included in the study. The equipment to capture the CO2 at the power plant, transport it, and then bury it underground could add up to 20 percent to our electric bills, according to a study done by the Massachusetts Institute of Technology this year. That’s also what a 2005 United Nations study found.

Carbon sequestration is not commercially available yet in the U.S., but other nations have been moving forward with it. Norway has been pumping CO2 into a natural gas field for a decade, with no leaks detected so far. And in February 2007, the largest experimental carbon sequestration project began in Australia with the drilling of a 6000 foot well. If there are no leaks, researchers will begin injecting CO2 into the well in July.

I’d like to hear from readers on this one (not that you’d hold back!). I’m personally a bit up in the air on carbon sequestration. It’s incredibly expensive, so why not first push forward with efficiency measures and renewable energy? Or, because global warming is such a threat, should the U.S. push forward with this technology at the same time we increase renewable energy and efficiency, despite the cost?

Mongabay.com
Oak Ridge National Laboratory Ecosystems
Reuters, via AlertNet
Technology Review
U.S. Environmental Protection Agency

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