e360 digest


18 Jun 2013: Low-Cost Deals and Incentives
Drive Record Sales of Electric Cars

After years of sluggish sales, the market for electric vehicles has surged in recent months in response to an escalating price war among automakers that has helped reduce the high up-front costs that have slowed the emerging EV sector. Since Nissan reduced the price of its electric Leaf by $6,400 to $19,000 earlier this year — a move that tripled sales of the car compared with the same time period last year — competitors such as Chevy, Fiat, Mitsubishi, Honda, and Toyota have responded with similar low-cost deals and buyer incentives, Time magazine reports. Within days of cutting the lease price for its Fit EV from $389 per month to $259 per month, Honda dealerships in California sold every model of the EV, forcing the automaker to apologize to customers who were then placed on a waiting list. But while the price war is driving EV sales and boosting consumer interest in the emerging green technologies, it is unclear whether it will be good for business in the long term. Chrysler, which owns Fiat, reported earlier this year that the company loses $10,000 for each Fiat 500e EV it sells.
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17 Jun 2013: Changes in Jet Stream Triggered
Record Greenland Melt in 2012, Study Says

An unusual shift in the jet stream triggered the historic level of surface ice melt that occurred across Greenland last summer, a new study says. Using satellite data and a computer model simulation, scientists from the University of Sheffield found that a high-pressure system developed in the mid-troposphere over Greenland for much of the summer, pushing warm southerly winds over the western edge of the ice sheet and creating a “heat dome” over Greenland. According to the study, published in the International Journal of Climatology, this unprecedented event caused record melting across virtually the entire ice sheet, including on Summit Station, Greenland’s highest peak. Ocean temperatures and Arctic sea ice retreat, meanwhile, played a minimal part in the record surface ice melt, the scientists reported. The study predicted that the record ice melt of 2012 is not likely to be “climatically representative of future ‘average’ summers” during the coming century.
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14 Jun 2013: Nicaragua Approves New Canal
Linking Atlantic and Pacific Oceans

Nicaragua has approved plans to build a $40 billion cross-country canal linking the Atlantic and Pacific oceans, a project that would rival the Panama Canal but is raising major concerns about impacts on regional

Click to enlarge
Nicaragua Canal Feasibility Study Routes

Gran Canal Interoceánico por Nicaragua
Possible canal routes
water supplies and the environment. Lawmakers yesterday granted Hong-Kong-based HK Nicaragua Canal Development Investment Co. a 50-year concession to study, and possibly construct, a 180-mile canal that advocates say would better accommodate the massive cargo ships and supertankers needed to handle the increased trade between Asia and the Americas. Major questions remain, however, about whether the canal will ever be built. Environmental advocates warn that water needed to operate the massive infrastructure project would deplete the region’s freshwater supplies. According to Public Radio International, five of the six canal routes identified in a feasibility study would cut across Lake Nicaragua, also known as Cocibolca, the country’s largest source of freshwater.
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13 Jun 2013: Population Could Be 11 Billion
By End of the Century, UN Report Says

A new United Nations report projects that the world population could reach nearly 11 billion by 2100, about 8 percent more than predicted just two years ago. The projected increase largely stems from the fact that the fertility rate in Africa has declined more slowly than expected, with demographers now forecasting that the number of people on the continent could nearly quadruple this century, from from about 1.1 billion today to about 4.2 billion. “The fertility decline in Africa has slowed down or stalled to a larger extent than we previously predicted, and as a result the African population will go up,” said Adrian Raftery, a professor of statistics and sociology at the University of Washington, who helped develop the statistical method used in the report. The total world population passed 7 billion in 2011. According to the new report, 8 of the top 10 increases in national populations by 2100 will occur in Africa, led by Nigeria, where the number of people is expected to jump from 184 million to 914 million.
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12 Jun 2013: Bird-Mimicking Mobile Apps
Harmful to Species, UK Groups Say

Wildlife officials in the UK are urging people not to use mobile phone apps that mimic bird songs in nature reserves, warning that the devices can harm some sensitive species, particularly during breeding season.
Chirp Bird Song App
iSpiny
Icon for Chirp! app
The increasingly popular apps, which use recordings of bird calls to lure the birds closer for photographs or better viewing, can distract birds from critical tasks, such as feeding their young, according to the Royal Society for the Protection of Birds. The Dorset Wildlife Trust (DWT), a conservation group that oversees 42 reserves, is discouraging the use of the mobile apps at its reserves, calling it an intentional disturbance of sensitive species such as the Nightjar, a nocturnal bird that has experienced a recent recovery in the area. “I’m sure visitors would be devastated if they realized the possible disturbance they were causing to wildlife,” said Chris Thain, a manager at DWT’s Brownsea Island reserve.
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11 Jun 2013: Growing Number of Pests
Developing Resistance to GM Crops

An increasing number of pest species are developing resistance to crops genetically engineered to be toxic to insects, according to new research. In an analysis of 77 studies conducted in eight countries, a team of U.S. and French scientists found that five of 13 major pest species had become resistant to so-called Bt cotton or corn plants, which are genetically modified to exude a bacterium, Bacillus thuringiensis, that is toxic to insects. While researchers say all insects inevitably adapt to threats such as pesticides, the study found that farmers who planted non-Bt crops in nearby “refuges” were more likely to slow that resistance. “Either take more stringent measures to delay resistance, such as requiring larger refuges, or this pest will probably evolve resistance quickly,” said Bruce Tabashnik, a professor at the University of Arizona and lead author of the study published in the journal Nature Biotechnology. The total land area planted annually with Bt crops has increased from 1.1 million hectares in 1996 to more than 66 million hectares in 2011.
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Interview: How Detergent Became
A Catalyst for Green Innovation

Adam Lowry is the co-founder and “chief greenskeeper” of Method, a small but rapidly growing company that has been a leader in the field of manufacturing
Adam Lowry
Adam Lowry
environmentally friendly cleaning and personal care products. Indeed, it was Method that pioneered the use of concentrated laundry detergent, an environmentally beneficial innovation that has been embraced by all the giant brands. Lowry and his partner, Eric Ryan, founded Method in 2001 and today the firm has more than $100 million in revenues and sells its products in retailers like Target and Whole Foods. In an interview with Yale Environment 360, Lowry discusses how his company has managed to profit from sustainability, why major corporations have been slow to embrace environmental innovations, and how plastic trash in the Pacific Ocean made its way into Method’s bottles of hand soap. Early on, says Lowry, “we recognized that our little business had the ability to catalyze much bigger change.”
Read the interview
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10 Jun 2013: Carbon Emissions Increased
1.4 Percent in 2012, IEA Reports

Global energy-related carbon dioxide emissions increased by 1.4 percent in 2012, a pace that could lead to a temperature increase of as much as 5.3 degrees C (9 degrees F) over pre-industrial times, according to the International Energy Agency’s (IEA) latest World Energy Outlook. Despite significant improvements in some regions, including the U.S. and Europe, a record 31.6 gigatons of carbon dioxide were emitted worldwide during the year, including a 5.8-percent increase in Japan, where more fossil fuels were burned to compensate for reductions in nuclear power. While the rate of emissions growth in China was dramatically lower than in recent years, it still emitted 3.8 percent more carbon dioxide in 2012 than in 2011. In its report, the IEA encouraged four strategies to prevent what it says will be a catastrophic temperature increase: improved energy efficiency in buildings, industry, and transportation; a reduction in construction and use of coal-fired plants; reduced methane emissions; and a partial phaseout of fossil fuel consumption subsidies.
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07 Jun 2013: New Map of Antarctica Provides
Clearest Glimpse of Subglacial Continent

British scientists have unveiled the most detailed topographical map available yet of Antarctica, a vast dataset that provides a penetrating 3-D view of the

Click to enlarge
Antarctica Map

NASA Goddard Space Flight Center
Antarctica's subglacial terrain
frozen continent down to the bedrock level and could offer insights into how it will respond to climate change. Based on millions of measurements collected over decades, the British Antarctic Survey’s Bedmap2 project illustrates the continent with a level of clarity not previously available, including a vivid look at the mountain landscapes buried in ice and valleys that run deeper than had been known. The scientists say better understanding the landscape will help them predict the behavior of Antarctica’s ice sheet in future decades and the extent to which melting could increase sea levels. The map was based on data collected by satellites, land-based surveys, and ice-penetrating measurements of the subglacial bedrock.
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06 Jun 2013: Carbon Emissions in Brazil
Dropped 39% from 2005 to 2010, Report Says

Greenhouse gas emissions in Brazil fell by nearly 39 percent from 2005 to 2010, largely because of reductions in the amount of forest loss, according to a new government report. Overall, Brazil emitted the equivalent of 1.25 billion tons of carbon dioxide in 2010, which was more than 10 percent lower than 1990 levels. About 76 percent of the reductions were the product of a dramatic decline in deforestation across the Amazon and surrounding savannahs, according to the government inventory. That decline was driven by the country’s conservation policies, including stricter enforcement of land use laws, expansion of protected regions, and stronger local incentives to achieve environmental goals. For the first time, agriculture accounts for the largest share of emissions. In fact, rising emissions from agriculture and the energy sector threaten to offset improvements achieved through reduced forest loss, experts warn.
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05 Jun 2013: First Amphibian Declared Extinct
‘Rediscovered’ in Israel’s Hula Valley

A team of scientists says it has “rediscovered” in northern Israel the first amphibian declared extinct by the International Union for Conservation of Nature (IUCN), a species of frog that turns out to be the only

Click to enlarge
Hula painted frog

Sarig Gafny
A Hula painted frog
surviving member of an extinct genus of frogs. First discovered in Israel’s Hula Valley in the 1940s, the Hula painted frog was presumed gone when Hula Lake dried up in the late 1950s, and it was declared extinct in 1996. But since an individual frog was discovered during a patrol in Hula Nature Reserve in 2011, an additional 10 specimens have been found, according to a study published in the journal Nature Communications. And while the frog had originally been categorized as a member of the Discoglossus group of painted frogs, which are found across northern and western Africa, genetic analysis has revealed that the Hula frog is more closely related to a genus of frogs, Latonia, that were common across Europe during prehistoric periods but considered extinct for a million years. “In other words,” the study says, “the Hula painted frog is a living fossil.”
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04 Jun 2013: Nanofilter System Can Deliver
Clean Water to Rural Families for $2.50

Indian scientists have developed a filter system they say can provide clean water to rural families for less than $2.50 per year and help reduce incidences of diarrhea that cause tens of thousands of deaths in the developing world annually. Writing in the Proceedings of the National Academy of Sciences, researchers from the Indian Institute of Technology Madras (IITM) describe the filter, which contains a composite of nanoparticles, held within a sieve, that emit a stream of silver ions that eradicate water-based microbes. In producing the filter, the team used a material called aluminium oxyhydroxide-chitosan, which, because of its structure and the diameter of the silver nanoparticles, is optimal for releasing the silver ions at temperatures of between five to 35 degrees C. In addition, the material is widely available, and environmentally friendly, and it keeps concentrations of the silver ions below safe drinking water standards, lead author Thalappil Pradeep told ScieDev.Net. So far, the scientists have installed the filters in water treatment plants in West Bengal, but are now seeking a company to produce the devices for widespread use.
PERMALINK

 

03 Jun 2013: Genetic Study Reveals Cheaper
Process to Convert Sawdust to Biofuel

A team of genetic engineers reports it has developed an inexpensive process that uses fungus to convert raw materials such as straw and sawdust into a productive biofuel. While it was previously known that the Trichoderma fungus produces the enzymes needed to break down such lignocellulosic wastes into a form of biofuel, the process was prohibitively expensive since the molecular switch required stimulation from a pure substance known as disaccharide sophorose, which is worth 60 times more than gold. Through genetic analysis, scientists from the Vienna University of Technology identified the specific gene that triggers the process — as well as the protein that the gene mutation affects — enabling them to mimic the same mutation in other strains of fungus. “We have understood the mechanism of this molecular switch and, consequently, many wonderful possibilities are opening up for us,” said Astrid Mach-Aigner, leader of the study published in the journal Biotechnology for Biofuels.
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31 May 2013: Getting More ‘Crop-per-Drop’
In World’s Driest Agricultural Regions

Improvements in irrigation in the world’s driest regions could significantly boost food production and water sustainability, according to a new study. In an analysis of how water is used for 16 staple food crops worldwide, including in regions with similar climates, a team of researchers identified specific areas where major efficiency improvements can be made in the so-called “crop per drop” — or the amount of food produced per liter of water. According to their findings, published in the journal Environmental Research Letters, about 40 percent of the available water in some dry regions is used to produce about 20 percent of the food calories. But in other regions with similar climate conditions, the productivity is much greater, said Kate A. Brauman, a researcher at the University of Minnesota’s Institute on the Environment. If these less-productive regions could improve their crop-per-drop productivity by even a modest amount, she said, “this would increase annual production on rain-fed croplands by enough to provide food for about 110 million people.”
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30 May 2013: Nuclear Power Has Prevented
1.84 Million Premature Deaths, Study Says

The use of nuclear power from 1971 to 2009 prevented more than 1.8 million premature deaths related to air pollution and 64 billion tons of greenhouse gas emissions, a new study says. Using historical production data and estimates of mortality per unit of electricity generated, scientists from NASA’s Goddard Institute for Space Studies and Columbia University calculated that replacing nuclear energy sources with fossil fuel-burning sources during that period would have caused about 1.84 million premature deaths. By midcentury, they project, nuclear power could prevent an additional 420,000 to 7 million deaths, depending on which fossil fuels it replaces, and 80 to 240 billion tons of greenhouse gas emissions. “By contrast, we assess that large-scale expansion of unconstrained natural gas use would not mitigate the climate problem and would cause far more deaths than the expansion of nuclear power,” said Pushker A. Kharecha, who, along with NASA’s James Hansen, co-authored the study published in the journal Environmental Science & Technology. The study calculated that nuclear power plant accidents caused about 4,900 deaths during the same period.
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29 May 2013: Genetically Modified Salmon
Can Breed with Wild Fish and Thrive

Fast-growing, genetically modified salmon can interbreed with wild brown trout and produce offspring that grow rapidly and out-compete other wild salmon in streams, according to a new study. Researchers from Memorial University in Newfoundland, Canada, found that so-called “Frankenfish” — which are close to being approved for sale in the United States — can easily interbreed with brown trout in the wild, creating offspring that aggressively compete for food with salmon. In settings that simulated real streams, the offspring of the genetically modified (GM) salmon and brown trout were so aggressive that they suppressed the growth of GM salmon by 82 percent and wild salmon by 54 percent. “These findings suggest that complex competitive interactions associated with transgenesis and hybridization could have substantial ecological consequences for wild Atlantic salmon should they ever come into contact [with GM salmon] in nature,” the researchers wrote in the Proceedings of the Royal Society B. The creator of the GM salmon, Aqua Bounty, said the risks were minimal since all the GM salmon will be female, sterile, and produced in tanks on land.
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28 May 2013: Electricity Availability Growth
Must Double to Achieve Global Access

The rate of expansion of access to electricity will have to double over the next 17 years if the world's population is to achieve 100 percent access to modern energy, a new report says. While about 1.7 billion people became connected to electricity sources worldwide between 1990 and 2010, that increase barely outpaced population growth during that period, according to Sustainable Energy for All, a group lead by the World Bank and the United Nations. More than 1.2 billion people still do not have access to electricity, and 2.8 billion still rely on burning wood or other biomass for household fuel, a source of pollution that causes about 4 million premature deaths annually. Achieving universal access to modern energy will require investments of $45 billion annually, which is five times the current levels. If combined with an expansion of renewable energy sources and improved efficiencies, however, achieving this growth in energy access would increase CO2 emissions by less than 1 percent, the report says.
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Interview: Pollan Explores Links
Between Biodiversity and Health

In his new book, Cooked, author Michael Pollan once again delves into issues relating to the connections
Michael Pollan
Photo by Fran Collin
Michael Pollan
between the environment and what we eat, and, more broadly, to humanity’s relationship to the natural world. Taking control of cooking, he argues, may be the single most important step an individual can take to help make the food system healthier and more sustainable. In an interview with Yale Environment 360, Pollan talks about how his research led him on a journey that ranged from the monoculture fields of U.S. commodity agriculture to the bacterial world inside the human body. And he notes the fundamental importance of biodiversity — in the landscape and the farm field, as well as in people’s diets. “This may prove to be the key legacy of ecology — what it teaches us about health,” Pollan says. “Who would have thought?”
Read the interview
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24 May 2013: Majority of Earth’s Population
Faces Water Shortages by Mid-Century

A conference of 500 of the world’s leading water scientists issued a stark declaration at the end of a four-day meeting in Germany, warning that within two generations a majority of the people on the planet will face problems obtaining ample supplies of clean water. At the meeting, “Water in the Anthropocene,” the scientists said that the of over-pumping of underground aquifers, soaring populations, pollution, the over-use of fertilizers, and climate change are seriously threatening supplies of freshwater around much of the globe. Continuing on the current path will mean that most of Earth’s population “will be living under the handicap of severe water pressure,” the scientists said, adding, “This handicap will be self-inflicted and is, we believe, entirely avoidable.” The conference proposed a wide range of solutions, including better study and monitoring of water supplies, basic reform in irrigation and agriculture, and innovation in the institutions that set national and global water policy.
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23 May 2013: China Poised to Launch
Much-Anticipated Carbon-Trading Project

China has revealed details of a carbon cap-and-trade pilot project that will be launched next month, a much-anticipated market attempt to rein in carbon dioxide emissions by the world’s biggest emitter. The first phase of the program, which will be implemented in the southern city of Shenzhen, will cover 638 companies that produce 38 percent of the city’s carbon emissions, according to the city branch of the government’s National Development and Reform Commission (NDRC). The system will impose caps on the companies’ CO2 emissions and establish a market for the buying and selling of emissions permits. Eventually, the program will be expanded to include the transportation, manufacturing, and construction sectors, the Guardian reports. By 2014, the experimental scheme will be expanded into six other designated cities and provinces, including Beijing and Shanghai. Earlier this week, the Chinese newspaper 21st Century Business Herald reported that the NDRC is contemplating a nationwide system to control CO2 emissions by 2020.
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22 May 2013: Whale’s Battle with Nets
Is Revealed Through Monitoring Device

A small monitoring tag attached to an entangled North Atlantic right whale revealed just how much fishing gear impairs a whale’s ability to swim, dive, and feed, scientists say. After locating a two-year-old whale,
Entangled Right Whale EcoHealth Alliance
EcoHealth Alliance, under permit number 594-1759
The entangled whale
dubbed Eg 3911, with fishing gear entangled around her mouth and pectoral fins, a team of scientists was able to attach a so-called Dtag in January 2011 that recorded her movements before, during, and after the team removed the nets. The whale “altered its behavior immediately following the disentanglement,” according to the study published in the journal Marine Mammal Science. She swam faster, dove twice as deep, and stayed underwater for longer periods. Scientists say the added buoyancy, increased drag and reduced speed caused by such gear may overwhelm an animal's ability to forage for preferred prey, delay its arrival to feeding or breeding grounds, and ultimately drain its energy. Indeed, two weeks after disentangling Eg 3911 from the nets, an aerial survey spotted her dead at sea.
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21 May 2013: Large Majority of Americans
Believe Global Warming Should be a Priority

Roughly 70 percent of Americans say global warming should be a priority for President Obama and Congress and 61 percent support requiring fossil fuel companies to pay a carbon tax that would be used to help reduce the national debt, according to a new survey by the Yale Project on Climate Change Communication. In a national survey conducted in April, 87 percent of respondents said that the president and Congress should make developing clean sources of energy a priority, 68 percent favored regulating carbon dioxide as a pollutant, and 71 percent supported providing tax rebates for people who buy solar panels and energy-efficient vehicles. Seventy percent said global warming should be at least a “medium” priority, while 28 percent said it should be a low priority. The poll showed that 7 in 10 Americans support funding more research into green energy sources.
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Interview: For Solar Sisters,
Off-Grid Electricity is Power

For Katherine Lucey, the lack of electricity in many parts of the developing world is not just an economic issue, it is a gender issue. A former investment banker,
Solar Sister Africa
Solar Sister
Mother in Uganda with a solar lamp.
Lucey is the founder and CEO of Solar Sister, a nonprofit that uses a market-based approach to provide solar power to communities in sub-Saharan Africa through a network of women entrepreneurs. Access to energy is critical to alleviating poverty, and women must be at the heart of any solution, says Lacey, since they are the family’s “energy managers,” responsible for cooking and heating needs. In an interview with Yale Environment 360, Lucey explains how Solar Sister’s operations rely on selling inexpensive solar energy systems to households to power lamps and recharge cell phones. Since 2010, Solar Sister has created a network of 401 businesswomen in three countries that has provided electricity to 54,000 people. Lucey says the model can be rapidly expanded and can transform lives. “We’ve got to find a way to tap into market resources and let people in their own communities solve their own problems," she says.
Read the interview
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20 May 2013: System Converts Pig Waste
Into Biogas at Chinese Pig Farms

An international team of researchers has developed a system that will help Chinese farmers convert massive amounts of pig waste into a renewable source of energy
Pig Waste Biogas
Getty Images
and fertilizer. The project, led by Australia-based Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), uses a two-step anaerobic biodigester that is able to treat 73,000 tons of waste annually, producing 380 cubic meters of biogas daily and about 5,600 tons of fertilizer per year. According to its developers, it will also provide a solution to a growing waste disposal challenge in China, where pigs generate more than 1.4 million tons of excrement annually. “Only 10 percent of this waste is currently treated, posing a considerable disposal headache, as well as health and water quality risks,” said Ravi Naidu, managing director of CRC CARE. While the system is being introduced at pig farms across China, Naidu says the technology could eventually help solve critical waste management challenges worldwide and make the pork industry more sustainable.
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17 May 2013: ‘Artificial Forest’ Nanosystem
Mimics Photosynthesis, Researchers Say

U.S. scientists have developed what they say is the first integrated nanosystem capable of replicating the process of photosynthesis, a sort of “artificial forest” that could one day lead to the production of hydrogen that could be used to power fuel cells. Composed of nanowire structures — including silicon “trunks” and titanium oxide “branches” — the system mimics the role played by chloroplasts in promoting photosynthesis in green plants. By assembling the “trees” in a dense array, resembling a miniature forest, the network lowers sunlight reflection and provides more surface area for hydrogen-producing reactions, the scientists say. “We’ve integrated our nanowire nanoscale heterostructure into a functional system that mimics the integration in chloroplasts and provides a conceptual blueprint for better solar-to-fuel conversion efficiencies in the future,” said Peidong Yang, a chemist with the Lawrence Berkeley National Laboratory and co-author of the study, published in the journal NANO Letters. The lab of Daniel Nocera at Harvard University is doing related research into so-called artificial leaves.
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16 May 2013: Scientist’s U.S. Road Trip
Reveals Unexpected Methane Emissions

Methane measurements collected during a scientist’s road trip across the U.S. indicate that local emissions of the potent greenhouse gas are higher than previously known in many regions. Using a gas chromatograph mounted to the roof of a rented camper, Ira Leifer of the University of California, Santa Barbara, collected air samples from Florida to California, finding the highest methane concentrations in areas with significant refinery activity — such as Houston, Texas — and in a region of central California with oil and gas production. He found that methane concentrations exceeded the levels estimated by the U.S. Department of Energy, particularly in areas near industrial fossil fuel extraction sites. The results point to the importance of targeting these “fugitive” methane emissions in parallel with efforts to reduce CO2 emissions. Leifer's findings were published in the journal Atmospheric Environment.
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15 May 2013: Glaciers on Everest Disappearing
As Temperatures Rise, Snowfall Declines

The glaciers on Mount Everest and the surrounding region have shrunk by 13 percent in the last five decades as temperatures have risen and snowfall has declined in
Mount Everest
Pavel Novak
that section of the Himalaya, according to a new study. Using satellite imagery and topographic maps, a team of scientists found that the majority of glaciers on Everest, the world’s tallest mountain, and in the surrounding Sagarmatha National Park are retreating at an accelerating rate. In the last 50 years, the snowline in the Everest region has shifted up by an average of 590 feet (180 meters), said Sudeep Thakuri, a Ph. D. student at the University of Milan and leader of the research team, which presented its findings at a conference in Cancún, Mexico. Because glaciers are melting faster than they are being replenished, researchers say, rock and debris that were previously hidden under snow are now exposed and absorbing heat.
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14 May 2013: Shifting Petrel Diets Suggest
Effect of Humans on Ocean Food Web

An analysis of the bones of ancient and modern Hawaiian petrels has revealed that modern petrels, which forage in the open ocean, are eating prey lower on the food chain than in centuries past, a dramatic shift
Hawaiian Petrel
USGS
that coincides with the rise of industrial fishing. In tests conducted on petrel bones collected over three decades in the Hawaiian islands, a team of scientists found that the bones from 4,000 to 100 years ago contained higher ratios of nitrogen-15 and nitrogen-14 isotopes than the more recent bones, suggesting that the earlier birds ate bigger prey before changes in the food web composition of the Northeast Pacific. According to the scientists, the nitrogen ratio started to decline in the decades after the early 1950s, when industrial fishing started to extend beyond the continental shelves. “Our bone record is alarming because it suggests that open-ocean food webs are changing on a large scale due to human influence,” said Peggy Ostrom, a zoologist at Michigan State University and co-author of the study, published in the Proceedings of the National Academy of Sciences.
PERMALINK

 

Interview: Climate Pioneer’s Son
Ponders a Worrisome CO2 Milestone

Climate scientist Ralph Keeling has followed in the footsteps of his renowned father, Charles David Keeling, who in 1958 became a pioneering figure in humanity’s struggle to combat climate change when he developed an accurate method of measuring CO2 in the atmosphere and
Ralph Keeling Curve
Scripps Institution of Oceanography
Ralph Keeling
tracking its increase. Today, his son is the director of the Scripps CO2 Program, which was founded by his father and this month reported that global carbon dioxide concentrations had passed an alarming milestone of 400 parts per million. In an interview with Yale Environment 360, Ralph Keeling discusses his father’s work, reflects on the meaning of CO2 levels climbing higher than they’ve been in at least 800,000 years, and expresses hope that crossing the 400 ppm mark may play a role in awakening the public to the dangers of runaway climate change. “It feels a little bit like we’re moving into a new era,” said Keeling. “Bringing about change requires people to be aware of what’s going on.”
Read the interview
PERMALINK

 

13 May 2013: Project Looks to Quantify
Power Emissions Through Crowdsourcing

A team of scientists is enlisting public support to help produce a more comprehensive inventory of carbon dioxide emissions from power plants globally, urging citizens to identify power plants in their communities with a new digital app. While data from some of the
Ventus Carbon Dioxide Map
Google Earth
world’s industrialized regions — including the U.S. and Europe — are already widely available, researchers at Arizona State University (ASU) say specific information on carbon emissions from most parts of the world is difficult to obtain. “It turns out that we know far less about fossil fuels than we thought we did,” Kevin Gurney, an emissions modeler at ASU and co-leader of the so-called Ventus Project, told Nature. “We could use some help.” Using a simple Google Earth application, the technology enables users to upload exact coordinates of local power plants, and, if possible, information on the type of fuels used or the quantity of CO2 emissions. Organizers hope that the crowdsourcing initiative will fill data gaps on the world’s roughly 30,000 power plants.
PERMALINK

 

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