12 Jan 2015:
Maasai Group Plans to Sell
Biogas Made From Slaughterhouse Waste
A group of Maasai farmers in southwestern Kenya has developed a profitable way to convert animal waste and
A Keeko Biogas cylinder prototype
blood from a local slaughterhouse into biogas that can power the facility as well as other local businesses, Reuters reports
. The Keeko Biogas project plans to start bottling the fuel and selling cylinders of it in March, once safety testing has been completed, project leaders say. At roughly $8 per 6-kilogram cylinder, the biogas is about half the price of liquefied petroleum gas, and it can be up to 40 percent more energy efficient than propane or butane, says the Kenya Industrial Research and Development Institute, which is providing technical support for the project. The facility will be able to produce 100 to 300 cylinders of biogas per week, organizers say. The project will not only offset the costs of waste management for the slaughterhouse, it will also likely help prevent deforestation in the region. "We cut down a lot of trees for charcoal and we hope to reduce that,” the chairman of the slaughterhouse told Reuters.
Interview: Giving Local Women
A Voice in Grass-Roots Conservation
The roles of women in traditional societies can be quite different from men’s, and their knowledge of the
natural world and the way in which conservation projects affect them may also be different. But these variables aren’t necessarily taken into account when developing such projects. The results can range from missed opportunities to project failure. Earlier this year, Conservation International began piloting guidelines to help integrate gender considerations into its community projects — an initiative that Kame Westerman, the "gender advisor" for that organization, helped develop. In an interview with Yale Environment 360
, Westerman discusses these guidelines, as well as the perils of ignoring gender when planning conservation initiatives.
09 Jan 2015:
Most Physicians Already Seeing
Health Effects of Climate Change in Patients
In a survey
of physicians in the American Thoracic Society (ATS), the majority of doctors said their patients
Results of survey on climate change and patient health
were already experiencing medical conditions associated with climate change and that physicians should be educating their patients and policy makers about climate-related health effects. Seventy-seven percent of ATS physicians — a group of doctors specializing in respiratory health and critical care — said air pollution associated with climate change is exacerbating chronic conditions such as asthma in their patients. Nearly 60 percent reported increases in allergies from plants or mold and injuries from severe weather related to climate change. Many of the physicians who responded to the survey said exposure to smoke from wildfires had caused or worsened lung conditions in their patients, and changes in precipitation and weather patterns seemed to be affecting patients as well, the Huffington Post
08 Jan 2015:
Land Disturbances Darken Snow
And Increase Melt Rate, Researchers Say
Land disturbances, such as agricultural practices and development, may have a big impact on snow purity and
Sampling snowpack in Montana
melt rates, according to
a large-scale survey of impurities in North American snow by researchers at the University of Washington. The researchers were particularly interested in the Bakken oil fields of northwest North Dakota. Before undertaking the study, they predicted that diesel emissions and air pollution associated with oil exploration would darken the snowpack, decreasing the amount of sunlight it reflects and increasing its melt rate. They found, however, that while these activities do add soot to the snow, the dirt they stir up adds an equal amount of impurities to the snowpack. Disturbances from clearing oil pads, new housing sites, agricultural activities, and extra truck traffic on unpaved roads add a significant amount of dirt to snowfields, they found.
07 Jan 2015:
Federal Judge Halts Hunting
And Trapping of Great Lakes Gray Wolves
A federal judge has stopped
the hunting and trapping of gray wolves in the Upper Midwest,
following their removal from the U.S. Endangered Species List in 2012 by the Obama administration. In the ruling, which affects gray wolf populations in Minnesota, Wisconsin, and Michigan — the so-called Great Lakes wolf population — the judge called the delisting of the wolves “arbitrary and capricious” and said it violated the Endangered Species Act
. The order came roughly three years after federal protections for the wolves were dropped by the U.S. Fish and Wildlife Service. Since then, the states have each held hunting seasons, resulting in 923 gray wolves killed in Minnesota, 654 in Wisconsin, and 22 in Michigan for a total of 1,599 killed. Researchers estimate that roughly 3,700 gray wolves live in the Great Lakes region.
06 Jan 2015:
Penguin Watch Projects Asks
Citizen Scientists to Monitor Birds' Habits
, a citizen science project launched by researchers from the University of Oxford in the U.K., is enlisting the
Group of Gentoo penguins
public's help in counting penguins in some 175,000 photos from locations across the Southern Hemisphere. Researchers are monitoring five penguin species — Gentoo, Chinstrap, Adelie, Rockhopper, and King penguins — and recording information on the number of adults, chicks, and eggs, as well as their winter behavior, breeding success, and travel habits. The project is especially useful for monitoring penguins' winter behavior, for example, because it's logistically difficult for the researchers to visit these locations in winter, they say
, and the images are far too numerous for researchers to view on their own. Understanding how the penguins live day-to-day should help shed light on how the penguins will respond to an increasingly volatile climate, the team says.
05 Jan 2015:
U.S. Cities Are Significantly
Brighter than German Cities, Scientists Say
German cities emit several times less light per capita than similarly sized American cities, according to new research
published in the journal Remote Sensing
Berlin, Germany, at night
Moreover, the differences in light emission become more dramatic as city size increases: Light per capita increases with city size in the U.S. but decreases in Germany. Factors such as the type of lamps used and architectural elements like the width of the streets and the amount of trees are likely behind the differences, the researchers say. Energy-efficient LED street lighting
is currently being installed in many cities worldwide, and the researchers expect this to change the nighttime environment in many ways — for example, by reducing the amount of light that shines upward. The study also found that, in major cities in developing countries, the brightest light sources were typically airports or harbors, whereas the brightest areas in large European cities are often stadiums and city centers.
02 Jan 2015:
Historical Photos Help
Document Changes in Greenland Glaciers
Historical photographs from the early and mid-1900s have helped researchers from Denmark map the retreat
Photo of a Greenland glacier from 1935
of Greenland's glaciers, according to
findings presented recently at the American Geophysical Union meeting. This glacier near the Sukkertoppen ice cap in southwest Greenland, for example, retreated roughly two miles between 1935 and 2013, as shown in photographs from the Danish Geodata Agency and the Natural History Museum of Denmark. Older photographs, from 1900 to 1930, show even more remarkable changes. During that time, following the end of the Little Ice Age in the late-19th century, glaciers retreated more rapidly than they have been in recent years, the researchers say. They believe the findings will shed light on how quickly these glaciers might react to future temperature changes.
29 Dec 2014:
The Arctic Is Absorbing
More and More Sunlight, NASA Images Show
The Arctic has been absorbing significantly more sunlight since the year 2000, according to NASA satellite data
Changes in absorption of sunlight in the Arctic
a trend that mirrors the steady decrease in Arctic sea ice during that same period. These maps show changes in the amount of solar radiation absorbed over the Arctic from 2000 to 2014, as well as changes in sea ice cover during the same period. As sea ice cover declines and more dark ocean is exposed to the sun's rays, that decreases the reflectivity, or albedo, of the ocean's surface, meaning more heat is absorbed. Shades of red depict areas absorbing more sunlight and areas with less ice cover. The Arctic's rate of absorption has increased by 5 percent every June, July, and August since 2000. No other region on the planet has shown significant changes in albedo during that time, researchers say.
23 Dec 2014:
Madrid Announces Largest
Energy-Efficient Street Lighting Project
The city of Madrid has announced plans
to renew its entire street lighting system with 225,000 new energy-efficient
New energy-efficient street lighting in Madrid, Spain.
bulbs, the world’s largest street-lighting upgrade to date. The new lights, which will afford the city a 44-percent reduction in energy costs, will pay for themselves, according to Philips
, the company supplying the new system. In addition to drawing less overall power, the bulbs’ intensity will be controlled from a central command panel, resulting in less wasted energy. Of the 225,000 new lights, 84,000 will be locally manufactured LEDs, and the city is taking measures to ensure the safe recycling of heavy metals found in the old lamps. Similar, though smaller, projects have been undertaken in Argentina, Sweden, and the Netherlands.
A Green Dilemma for the Holidays:
Better to Shop Online or In-Store?
Various studies in recent years have suggested that online shopping typically packs a lower carbon punch than shopping at brick-and-mortar stores. But new research suggests the story is more complicated than that. The key, according to a report in the Journal of Cleaner Production
, is to minimize the number of miles driven per item — whether by the shopper, a local delivery van, or a FedEx truck.
19 Dec 2014:
'Nuisance Flooding' Will Affect
Most of U.S. Coastline by 2050, Report Finds
By 2050, most U.S. coastal areas are likely to be threatened by 30 or more days of flooding each year due sea level
Nuisance flooding projections for U.S. cities
rise, according to
a new report the National Oceanic and Atmospheric Administration (NOAA). The researchers looked at the frequency of so-called "nuisance flooding," which occurs when the water level reaches one to two feet above local high tide, and found that several cities along the East Coast are already seeing more than 30 days of nuisance flooding each year. Additional major cities — including Baltimore, Atlantic City, Philadelphia, and San Francisco — will reach or exceed that benchmark by 2030, the report says. Although nuisance flooding is not typically catastrophic or dangerous, it is often costly. The report drives home the point, researchers say, that such floods will become commonplace far earlier than 2100, which is generally cited as the date when sea level rise is likely to become damaging.
18 Dec 2014:
Clearing Rainforests Distorts
Global Rainfall and Agriculture, Study Says
Clearing forests not only releases carbon into the atmosphere, it also triggers worldwide shifts in rainfall and temperatures
Global effects of forest loss
that are just as potent as those caused by current carbon pollution and that pose great risk to future agricultural productivity, researchers report
. Deforestation in South America, Southeast Asia, and Africa may alter growing conditions in agricultural areas as far away as the U.S. Midwest, Europe, and China, the study in Nature Climate Change
finds. The researchers calculate that complete tropical deforestation could trigger atmospheric changes leading to an increase of 0.7 degrees Celsius in global temperatures, in addition to warming caused by greenhouse gases released from the deforestation itself. That would double the observed global warming since 1850, the researchers note. They say their findings indicate that many of the predicted changes associated with widespread deforestation are already occurring — from Thailand, which is receiving less rainfall at the beginning of the dry season, to parts of the Amazon, where once-predictable rainfall has shifted notably.
17 Dec 2014:
Obama Protects Alaska's
Bristol Bay From Oil and Gas Development
President Obama yesterday announced protections for Bristol Bay, Alaska
A grizzly bear catches a salmon in Bristol Bay.
of the most productive fishing grounds in the nation, from future oil and gas development. The president's action is expected to benefit commercial fishermen and Native Alaskans and boost conservation efforts in the region, which is roughly the size of Florida. Noting that Bristol Bay is the world's largest sockeye salmon fishery and the source of 40 percent of U.S. wild-caught seafood — a catch worth $2 billion annually — Obama vowed to ensure long-term safeguards for the bay. The region has been under protection intermittently since 1989, when the Exxon Valdez spill prompted a federal moratorium on offshore drilling. "It is a natural wonder, and it’s something that’s just too precious to be putting out to the highest bidder," Obama said in a video message
. The federal government is still considering whether to allow development of what would be North America's largest open-pit mine
in the bay's watershed.
16 Dec 2014:
Falling Gasoline Prices Have
Little Effect on Car Travel, Analysis Shows
Although the average retail price of gasoline in the U.S. has fallen 28 percent from its peak in June 2014,
Gas prices vs. miles driven
the decline may not have much effect on automobile travel and gasoline consumption, according to an analysis by the U.S. Energy Information Administration
(E.I.A.). Typically, an increase in the price of a product leads to lower demand, and vice versa — a concept known as price elasticity. Air travel, for example, tends to be highly elastic: A 10-percent increase in the price of air fares leads to an even greater decrease in air travel. Automobile travel tends to be much less elastic, however. According to E.I.A. data, it takes a 25- to 50-percent decrease in the price of gasoline to increase automobile travel by just 1 percent. One reason for this is that the distance people drive to work and for daily errands is relatively fixed, analysts say. Increased vehicle fuel economy also balances out increases in miles traveled, leading to more stability in gasoline consumption.
Beyond Lima: Major Investors
Must Fund Global Green Initiatives
Much of the discussion at the recent U.N. climate talks in Lima, Peru, was about the financing that
Climate talks in Lima stretched into Sunday.
will be needed to decarbonize the world’s energy supply, improve efficiency, and redesign cities and transportation systems to reduce greenhouse gas emissions. As journalist Isabel Hilton reports for e360
from Lima, moving the broader financial markets toward green investments is critically important in order to avoid the worst impacts of climate change. The key, Hilton writes, is to get major institutions to invest in sustainable growth, particularly renewable energy, and to get major companies and the industrial sector to understand that they must revise their strategies to address the risks of climate change.
Read Hilton's analysis.
15 Dec 2014:
Draft Climate Accord Reached
In Lima Leaves Many Doubts in Its Wake
While lead negotiators at the Lima climate talks hailed a hard-fought climate agreement forged over the weekend, many critics say the accord does not go nearly far enough in forcing meaningful reductions in global greenhouse gas emissions. The accord marks the first time that all nations, rich and poor, have agreed to submit plans outlining how they will reduce carbon emissions.
But the Lima Accord, intended to lay the groundwork for crucial climate talks next December in Paris, does not include legally binding requirements that countries cut their emissions by a specific amount. As the negotiations dragged on for an additional two days, an agreement was reached on Sunday only after China and other nations killed a provision
that would have required all countries to submit readily comparable emissions data. Still, many climate officials praised the plan because it marked the first time that nearly 200 nations agreed to submit blueprints on how they plan to reduce greenhouse gases.
12 Dec 2014:
Majority of Americans Support
Climate Actions and Negotiations, Poll Says
Most Americans want the United States to be a world leader in combating global warming and to be participating in international climate negotiations, according to
a poll by the Associated Press-NORC Center for Public Affairs Research and the Yale School of Forestry & Environmental Studies. Sixty-one percent of Americans think the U.S. should lead other nations on climate change, even if it means taking action when other countries do not. A majority of both Democrats and Republicans support some specific policies intended to curb greenhouse gas emissions in the U.S., the poll found, such as funding research for clean energy and regulating CO2 emissions. Less than 20 percent of people polled think such protections would harm the economy long-term, while 60 percent say they would improve economic growth and provide jobs.
11 Dec 2014:
India and Australia Are
Focus of Attention in Lima Climate Talks
As United Nations climate talks in Lima, Peru, near an end, negotiators and observers are looking at India and Australia to see whether they will support a draft agreement to reduce greenhouse gas emissions. With China and the U.S. having agreed last month to reduce carbon emissions, India — the world’s third largest emitter of CO2 — has said its emissions will continue to rise as it pulls its people out of poverty. But India’s environment minister said in Lima yesterday that the country would spend $100 billion
on clean energy and climate adaptation projects and would play its part in cutting CO2 emissions. Australia — whose Prime Minister, Tony Abbott, has weakened the country’s climate laws — is playing a constructive role at the talks and may support a draft emissions-reduction agreement that could be ratified next December in Paris, observers said. Australian Foreign Minister Julie Abbott said that any climate agreement “must [move] past the developed-developing country divide
that puts a brake on real action.”
10 Dec 2014:
Draft Agreement in Lima Talks
Calls for Emissions Cuts by All Nations
A draft agreement calling for all nations to commit to greenhouse gas emissions cuts is circulating among climate negotiators in Lima, Peru, The New York Times
reports. The proposed text calls for each of the 196 countries involved in negotiations to publicly commit to its own plan for reducing emissions. Those individual plans, however, will be driven by national politics and economic concerns, rather than by what scientists say is needed to curb the worst effects of climate change, critics say. Historic pledges by the U.S. and China last month to cut emissions catalyzed the new draft text, negotiators say, because the two nations — the world's largest greenhouse gas emitters — had been spoilers in previous climate talks. “It’s a breakthrough, because it gives meaning to the idea that every country will make cuts,” said Yvo de Boer, the former executive secretary of the United Nations Convention on Climate Change. The goal for the Lima talks is to settle on a draft text, which could become the basis for a deal signed by world leaders in Paris next December.
09 Dec 2014:
As Ministers Arrive,
Lima Climate Talks Face High Hurdles
With government ministers and UN secretary General Ban Ki-moon arriving at climate negotiations in Lima, Peru, large gaps remained
between developed and developing countries over the issues of formalizing aid to poorer countries to adapt to climate change. Climate negotiators in Lima are drafting a negotiating outline for key climate talks in Paris next December, which many governments hope will lead to a binding global treaty to slash carbon emissions. The U.S. and the European Union want the focus of any treaty to be on emissions cuts, or mitigation, while developing nations are seeking written guarantees from wealthy nations to provide financing and other assistance to developing countries for climate adaptation. Ban Ki-moon has said he is confident that this divide can be bridged before the Lima talks end on Friday. Delegates from the Philippines, a country hit hard recently by typhoons and other weather-related disasters, said in Lima that they will push hard for a new deal requiring all nations, including developing countries, to slash emissions.
08 Dec 2014:
Latin American and Caribbean
Nations Pledge Major Forest Restorations
Latin American and Caribbean countries yesterday launched Initiative 20x20
, an effort to begin restoring
Forest restoration commitments
20 million hectares of degraded land — an area larger than Uruguay — by 2020. The initiative has secured $365 million in funds, its leaders announced, which will be used to restore forests, avoid deforestation, and improve the use of trees and livestock in agriculture — practices known as agroforestry and silvopasture. This restoration is expected to provide extensive economic, social, and environmental benefits through improved local livelihoods and ecosystem services such as erosion prevention, water purification, and carbon storage, organizers say. Restoration commitments totaling just over 20 million hectares were announced yesterday, with Mexico and Peru making the largest pledges. The initiative was launched in Lima, Peru, alongside international climate talks.
05 Dec 2014:
U.S. Natural Gas Fracking Boom
May Be Shorter Than Predicted, Study Says
Estimates of the amount of natural gas that can be extracted from U.S. reserves is much too high and the boom may last just half as long as predicted, says a new report
in the journal Nature
. Official government estimates by the Energy Information Administration (EIA) suggest that peak natural gas production, driven by the rapid growth of hydraulic fracturing, will likely last until 2040 before tapering off. The new analysis suggests that that estimate is too high. Instead, researchers say, the peak will likely come in 2020, and after that production will fall off dramatically. The findings are based on higher-resolution, finer-scale estimates of oil and gas reserves — in units of a single square mile — compared to the EIA's method, which lumps together all land within a single county. The EIA's method also fails to account for the realities of economics, the reseachers say: Fracking companies tend to look for "sweet spots," which they quickly abandon as soon as the reserves become depleted and extraction costs rise.
04 Dec 2014:
Arabian Sea Whales Are Earth's
Most Isolated and Endangered Population
Humpback whales inhabiting the Arabian Sea are the most genetically distinct humpback whales and may be
the most isolated population on earth, researchers report
. With fewer than 100 estimated individuals, they are "definitely the most endangered" population of humpbacks, said Wildlife Conservation Society researcher Howard Rosenbaum. The Arabian humpbacks' known range is limited to waters near Yemen, Oman, the United Arab Emirates, Iran, Pakistan, and India, and possibly the Maldives and Sri Lanka, researchers say. Genetic data suggest they have remained separate from other humpback whale populations for 70,000 years — extremely unusual in a species famed for annual migrations of 9,000 kilometers or more. The genetic separation is likely reinforced by their breeding schedule, researchers say. While Arabian humpbacks breed on a northern hemisphere schedule, their closest neighbors breed on a southern schedule.
03 Dec 2014:
Public Largely Unaware of Meat
And Dairy's Contribution to Climate Change
The general public has a major lack of understanding of how eating meat and dairy contributes to climate change,
Perceived vs. actual carbon emissions
according to a survey
of Europe, the Americas, Asia, and Africa by the market research organization Ipsos MORI. Although meat and dairy production accounts for roughly 15 percent of total global carbon emissions — equal to exhaust emissions from the international transportation sector — less than 30 percent of survey respondents identified meat and dairy production as a major contributor to climate change. More than twice as many — 64 percent — said transportation was a major contributor. Closing the awareness gap is essential for changing meat and dairy consumption patterns, researchers said, especially in developed nations such as the U.S. Although much of the projected increase in meat and dairy consumption will likely happen in emerging economies, respondents in Brazil, India, and China demonstrated greater consideration of climate change in their food choices and above-average willingness to modify their consumption — an encouraging sign, researchers said.
02 Dec 2014:
New Proposal Outlines
Key Elements for a Global Climate Pact
Coinciding with U.N. climate talks in Lima, Peru, this week, a consortium of policy experts has released a proposal
Key components of a global climate pact
outlining the key ingredients of a comprehensive climate agreement in Paris next year. Three major components of such a pact, the group said, will be a long-term plan to phase out all greenhouse gas emissions as early as possible in the second half of this century; a long-term goal of reducing the vulnerability and building the resilience of communities facing climate impacts; and establishing five-year cycles for assessing and strengthening nations' actions to cut emissions and adapt to climate change. The proposal stresses "fairness, equity, and justice in climate actions," and suggests different timelines and responsibilities for developed and developing countries. The analysis, from experts at 10 research institutions, is based on interviews with climate negotiators and hundreds of government representatives.
Five Questions for Gus Speth
On His Environmental Evolution
In a career that has spanned founding major environmental organizations, heading the United Nations
James "Gus" Speth
Development Programme, and serving as dean of the Yale School of Forestry & Environmental Studies, James "Gus" Speth has seen his own ideas about environmental issues change dramatically over the years. Yale Environment 360
asked Speth five questions about his new memoir, Angels by the River
; his growing recognition of the global nature of environmental problems; and his dissatisfaction with the state of the environmental movement in the United States.
01 Dec 2014:
Politics, Not Extreme Weather,
Shape Climate Perceptions, Study Finds
Climate extremes such as droughts and record temperatures are failing to change people’s minds about global warming, according to a recent study
led by Michigan State University sociologists. Instead, political orientation is the most influential factor in shaping perceptions about climate change, both in the short-term and long-term, the researchers found. Some previous studies suggested temperature patterns do influence perceptions about global warming, but none measured climatic conditions as comprehensively as the current research. The study analyzed 50 years of regional climate data and climatic storm-severity measures used by the National Oceanic and Atmospheric Administration from all 50 states, along with 11 years of public opinion data from Gallup polls on climate change perceptions. Although advocates of climate change reduction efforts hope that experience with a changing climate will eventually convince the public of the reality and seriousness of the problem, the current findings do not bode well for that scenario, the researchers say.
26 Nov 2014:
Aerodynamic Upgrades to
Large Trucks Would Cut Fuel Use Steeply
The fuel consumption of the 2 million tractor-trailer trucks hauling cargo across the U.S. — which currently
Airflow patterns around a tractor-trailer truck
burn 36 billion gallons of diesel fuel per year — could be cut by billions of gallons through the use of drag-reducing devices, according to
researchers at Lawrence Livermore National Laboratory. In wind tunnel tests, researchers fitted a scale-model truck with two types of devices designed to reduce drag and improve aerodynamics: a trailer skirt, which consists of panels affixed along the lower side edges of a trailer, and a boat tail fairing, which is affixed to the back of the trailer to reduce the size of its wake. The researchers found that using the devices in combination — technology currently installed on only 3 to 4 percent of the nation’s large trucks — reduced the aerodynamic drag by as much as 25 percent, which translates to a 13-percent decrease in fuel consumption. If the U.S. tractor-trailer fleet were to improve its fuel economy by 19 percent, which the researchers say is achievable, 6.5 billion gallons of diesel fuel would be saved each year, avoiding 66 million tons of carbon dioxide emissions.
25 Nov 2014:
China’s Lake Ebinur Has Been
Shrinking Dramatically, NASA Image Shows
As this NASA satellite image shows
, Lake Ebinur, located in northwestern China near the border of
Kazakhstan, has shrunk by 50 percent since 1955 as a result of development, agriculture, and natural fluctuations in precipitation. The lake’s saline water is light blue, and the dried lake bed appears white due to salts and other minerals that have been left behind as the water evaporates. The lake’s size fluctuates from year to year due to natural variations in snowmelt and rainfall, and human activity also plays a key role, Chinese researchers say. The nearby city of Bole, with a population of 425,000, consumes significant amounts of water, and farmers irrigate their crops — especially cotton — with water that would otherwise flow into the lake, researchers say. Frequent saline dust storms contribute to desertification, damage soils, harm wetlands, and may be hastening the melting of snow and glaciers downwind, researchers say.