26 Jun 2015:
Fuels from Canadian Oil Sands
Have Larger Carbon Footprint, Analysis Says
Gasoline and diesel refined from Canadian oil sands have a significantly larger carbon footprint and climate impact than
Oil sands extraction in Alberta, Canada
fuels from conventional crude sources, according to an analysis
by the U.S. Department of Energy's Argonne National Laboratory. Oil sands-derived fuels will release on average 20 percent more carbon into the atmosphere over their lifetime — and possibly up to 24 percent more — depending on how they are extracted and refined, the study says. Methane emissions from tailing ponds and carbon emissions from land disturbance and field operations also contribute to the higher carbon footprint. "This is important information about the greenhouse gas impact of this oil source, and this is the first time it has been made available at this level of fidelity," said Hao Cai, the Argonne researcher who led the study. Roughly 9 percent of the total crude processed in U.S. refineries in 2013 came from the Canadian oil sands, and that percentage is projected to rise to 14 percent by 2020.
23 Jun 2015:
Linking Disasters to Climate
Makes Skeptics Less Likely to Donate
Linking natural disasters to climate change makes global warming skeptics less likely to donate money to relief efforts, says a study
by psychologists at the University of Massachusetts. They asked study participants to read an article about a drought-related famine; one version of the article attributed the droughts to climate change, and the other version made no mention of climate. The researchers then asked the participants why they would or would not donate money for relief, and about their climate change beliefs. Participants who were skeptical about global warming gave more justifications for not helping the victims when the disaster was attributed to climate change than when it was not, the study found. “What our work suggests is that when a disaster occurs and organizations are appealing to the public for aid, it is best to minimize the inclusion of heavily politicized topics,” lead author Daniel Chapman told ClimateWire
19 Jun 2015:
Jet Contrails Can Affect
Air Temperature in Some Areas, Study Shows
Jet contrails can mimic the weather impact of clouds and significantly affect daytime and nighttime air temperature
Persistent jet contrails
swings — by up to 6 degrees Fahrenheit in some locales — researchers from Penn State have shown
. Data from the three days following September 11, 2001, when air travel was highly restricted, had shown that jet contrails — thin clouds composed of ice crystals condensed from an aircraft's exhaust — likely had an effect on air temperatures. To study the issue over a longer time period, the researchers looked at daily temperature data from locations in the South and Midwest that often see persistent jet contrails. They found that contrails, like clouds, depress the difference between daytime and nighttime temperatures, typically lowering daytime highs and raising nighttime lows. In the South, this amounted to a 6 degree F reduction in daily temperature range, and in the Midwest, roughly a 5 degree F reduction.
18 Jun 2015:
Pope Calls for Global Action on
Climate Change and Environmental Problems
Pope Francis released today
his highly anticipated encyclical, which is largely focused on halting climate change and
environmental degradation and emphasizes the importance of protecting impoverished communities from the worst effects. This is the first such letter from a leader of the Catholic Church to address environmental issues, analysts say. “Climate change is a global problem with grave implications: environmental, social, economic, political,” Pope Francis wrote. “It represents one of the principal challenges facing humanity in our day.” Industrialized countries are responsible for most of the damage, he said, and are obligated to help developing nations cope with the looming crisis. Within the document, he delves deeply
into both climate science and economic development policies, and chides climate change skeptics for their "denial."
10 Jun 2015:
Jet Fuel from Sugarcane
Cuts Aviation Carbon Emissions, Study Says
Converting sugarcane to jet fuel can reduce greenhouse gas emissions from air travel by up to 80 percent and the process could be scaled up to produce commercially viable amounts
of fuel, say researchers from the University of California, Berkeley. The new technique they developed, which is described in the Proceedings of the National Academy of Sciences
, relies on complex chemical reactions involving sugars and waste biomass from sugarcane. That crop, unlike the sugar beet, can be grown on marginal lands so it does not displace food production — a major concern that has tempered enthusiasm for biofuels in general. Jet fuel, which is responsible for roughly 2 percent of all carbon emissions, has been difficult to synthesize from biomass because of its stringent quality requirements. Biofuels were approved for commercial aviation as recently as 2011, and researchers have been seeking a viable production method for nearly a decade.
04 Jun 2015:
Seven Tiny Frog Species
Are Discovered in Brazilian Forest
Seven new species of a highly miniaturized, brightly colored frog genus known as Brachycephalus
One of the species of miniaturized frogs.
discovered in the Brazilian Atlantic rainforest, researchers report
today. The frog species are restricted to cloud forests in no more than a few adjacent mountaintops, making them highly vulnerable to extinction, the researchers say. The cloud forests they inhabit are particularly sensitive to climatic conditions, and small shifts can cause major changes in the distribution of the forests. The frogs' adaptation to these specific environments prevents them from migrating across valleys as the cloud forest shifts. The long-term preservation of these species might involve not only the protection of their habitats but also more direct management efforts, such as rearing in captivity, the researchers say. Brachycephalus
frogs are among the planet's smallest terrestrial vertebrates, with adult sizes often not exceeding 1 cm in length.
02 Jun 2015:
Pollution From Carbon Monoxide
Has Fallen Steadily Since 2000, Data Show
As these NASA satellite maps show
, carbon monoxide levels have decreased appreciably in much of the world since 2000, thanks to
Global carbon monoxide levels as of 2014
improved pollution controls on vehicles and factories and fewer forest fires. Carbon monoxide, which is produced whenever carbon-based fuels are burned, contributes to the formation of ozone, a pollutant that can have adverse health effects. A NASA satellite carrying a sensor called MOPITT — Measurements of Pollution in the Troposphere — measures carbon monoxide levels. Higher concentrations of CO are depicted on the map in orange and red and lower concentrations in yellow. NASA said that the decrease in CO levels from 2000 to 2014 was particularly noticeable in the northern hemisphere thanks to technological and regulatory innovations that have led to lower pollution levels from vehicles and industry. Carbon monoxide levels also have decreased in the southern hemisphere since 2000, due largely to a reduction in deforestation fires.
27 May 2015:
Power Plant Emissions to Drop
To 1980s Levels Under U.S. Clean Power Plan
The Environmental Protection Agency’s plan to regulate power plant emissions will cut carbon pollution to its lowest
Big Bend coal power plant in Florida
level since the 1980s, reducing CO2 emissions from power plants by 1.6 billion tons per year, according to an analysis
by the U.S. Energy Information Administration (EIA). The Clean Power Plan, which was proposed last June, sets goals for reducing carbon emissions from existing power plants by 2030. Under the plan, power sector CO2 emissions are projected to fall 25 percent below 2005 levels by 2020, and 34 percent below 2005 levels by 2030, the EIA analysis found. That would bring CO2 emissions from the power sector down to levels not seen since the early 1980s, the report notes.
19 May 2015:
Maps Depict China's Coasts
Under Scenario of Dramatic Sea Level Rise
Roughly 43 percent of China's population lives near the coast — a region that is expected to experience dramatically
Shandong province after dramatic sea level rise
rising sea levels if global warming continues along its current trajectory. What will China's coast look like far in the future if polar ice sheets and glaciers undergo extensive melting? Cartographer Jeffrey Linn has used projections from the Intergovernmental Panel on Climate Change (IPCC) to depict the impact of a 200-foot rise in global sea level
. In this map, he shows the potential inundation of a portion of Shandong province near the town of Qingdao, home to 3.5 million people and the brewery that makes the widely distributed beer Tsingtao. Earlier, Linn drew up similar maps showing the inundation western North America's coastline
under scenarios of extreme sea level rise.
18 May 2015:
Low Snowpack Raising Drought
Concerns in Oregon and Washington
While drought conditions in California and the southwestern U.S. have been dominating news headlines, Oregon and
Washington could also soon be facing dangerously dry conditions due to low snowpack
levels, as these photos show. Although the region has seen several months with average or just-below average precipitation, unusually warm temperatures on land and offshore led to most of that moisture arriving in the form of rain rather than snow. Like many parts of the western U.S. and Canada, the Pacific Northwest depends on mountain snowpack to melt and fill streams and rivers through warmer, drier summer months. According to state officials, snowpack in Washington was just 16 percent of normal as of May 15, and yearly runoff is predicted to be at its lowest in 64 years. Average snowpack in Oregon stood at just 11 percent of normal, its lowest level since 1992.
15 May 2015:
Indonesia Extends Major Logging
Moratorium, Which Critics Decry as Weak
Indonesia has extended a major logging moratorium
aimed at preserving the archipelago's vast swathes
Deforestation for a palm oil plantation in Indonesia.
of tropical rainforest, but environmentalists say the logging ban does not go nearly far enough. The country, home to some of the world's most biodiverse rain forests and endangered species such as tigers and elephants, first enacted the moratorium in 2011, banning new logging permits for primary and virgin forests and peatlands. The moratorium was first extended until 2015, and now has been extended again, to 2017. Environmental groups have criticized the moratorium, however, saying that it still allows deforestation for ventures deemed in the national interest, such as infrastructure projects and agricultural plantations. Indonesia is the largest economy in Southeast Asia and third-largest carbon emitter in the world. Huge swathes of its forests have been chopped down by palm oil, mining, and timber companies.
13 May 2015:
Car Travel Is Six Times
More Expensive Than Bicycling, Study Finds
Traveling by car costs society and individuals six times more than traveling by bicycle, according to a study
Bicycles parked in downtown Copenhagen
transportation trends in Copenhagen, one of the planet's most heavily bicycled cities. The analysis considered how much cars cost society and how they compare to bicycles in terms of air pollution, climate change, noise, road wear, public health, and congestion in Copenhagen. If the costs to society and the costs to private individuals are added together, the study found, the economic impact of a car is 0.50 euros per kilometer, whereas the cost of a bicycle is 0.08 euros per kilometer. Looking only at costs and benefits to society, one kilometer by car costs 0.15 euros, whereas society earns
0.16 euros on every kilometer cycled because of improvements in the public's health.
12 May 2015:
Unique Stretch Marks Show
Greenland Ice Accelerating Toward Sea
The Greenland ice sheet is accelerating as it flows toward the ocean, and the unique markings visible in this photograph
Crevassing in Greenland ice
are one piece of evidence
demonstrating its rapid movement. Captured as part of NASA's Operation IceBridge
, which is wrapping up its seventh season of Arctic observations, this image details heavy crevassing near the coast of Melville Bay in northwestern Greenland. These fissures are essentially stretch marks on the ice, NASA researchers say. Ice sheets in Greenland and Antarctica are losing mass at an unprecedented rate of 500 cubic kilometers per year — enough ice to cover the Chicago metropolitan area with a layer of ice 600 meters thick — according to
one recent report.
05 May 2015:
Pollen May Play Surprising
Role in Climate and Cloud Formation
Grains of pollen may be seeding clouds and affecting the planet's climate in unexpected ways, University of Michigan researchers
Grains of pollen can break into even smaller particles.
write in the journal Geophysical Research Letters
. Scientists had assumed that pollen particles were too large to remain in the atmosphere long enough to interact with the sun's radiation or trigger cloud formation. The study found, however, that pollen grains are capable of disintegrating into much smaller particles and that exposure to humidity can accelerate pollen's breakdown. Using a cloud-making laboratory chamber, the researchers showed that six common types of pollen — ragweed and oak, pecan, birch, cedar, and pine trees — could break into particles small enough to draw moisture and form clouds. "What happens in clouds is one of the big uncertainties in climate models right now," author Allison Steiner said.
01 May 2015:
One in Six Species Facing
Extinction in Current Climate Trajectory
Future increases in global temperatures will threaten up to one in six species if current climate policies are not modified,
Nursery frogs are among the species most at risk.
according to new research
published in the journal Science
. Global extinction rates are currently at 2.8 percent, the study notes. If global average temperature rises by only 2 degrees C — a benchmark that many scientists think is no longer attainable — the extinction rate will rise to 5.2 percent, the study found. If the planet warms by 3 degrees C, the extinction risk rises to 8.5 percent. And if the current, business-as-usual trajectory continues, climate change will threaten one in six species, or 16 percent, the study says. The risk of species loss is most acute for areas that have unique climate ranges — particularly South America, Australia, and New Zealand — yet those regions are the least studied, the author notes.
30 Apr 2015:
Volcanic Eruption in Chile Could
Have an Effect on Climate, NASA Data Show
Calbuco volcano, which erupted in southern Chile last week for the first time since 1972, has been injecting climate-changing
Sulfur dioxide from Calbuco volcano
gases directly into an upper layer of the atmosphere, NASA satellite data
show. The particularly explosive eruption shot sulfur dioxide, an acrid-smelling gas that can cause respiratory problems at ground level, up into the stratosphere, where it reacts with water vapor to create sulfate aerosols that reflect sunlight and can sometimes have a slight cooling effect. So far, Calbuco has released an estimated 0.3 to 0.4 million tons of sulfur dioxide (SO2) as high as 13 miles, where it will last much longer and travel much farther than if released closer to the earth's surface. The SO2 will gradually convert to sulfate aerosol particles, but it is not clear yet whether there will be a cooling effect associated with Calbuco's eruption, researchers say.
Interview: How British Columbia
Gained by Putting Price on Carbon
Earlier this month, Ontario announced it will join the carbon cap-and trade-program that Quebec and California participate in.
British Columbia, in 2008, became the first jurisdiction in North America to adopt an economy-wide carbon tax. Stewart Elgie, a professor of law and economics at University of Ottawa, has analyzed the results of that tax and describes them as “remarkable.” In a Yale Environment 360
interview, Elgie says the tax has significantly reduced British Columbia’s fossil fuel use without harming its economy. Citing the lack of support for a carbon tax at the federal level in Canada as well as in the U.S., Elgie warns that “we’re moving toward a global economy that will reward low-carbon, innovative, resource-efficient production. And if we don’t prepare ourselves for that, other countries are going to eat our lunch.”
Read the interview.
29 Apr 2015:
California Governor Orders
Tough New Greenhouse Gas Emissions Target
California will cut its greenhouse gas emissions by 40 percent compared to 1990 levels over the next 15 years, according to an
California Governor Jerry Brown
issued today by Governor Jerry Brown. The state already has an ambitious climate law on the books, requiring emissions cuts of 80 percent from the 1990 benchmark by 2050. Brown says the new order sets a tough interim target that will be important for ensuring the state meets its 2050 goal. The state's 2030 and 2050 emissions goals build on a law enacted under former governor Arnold Schwarzenegger that requires the state to reduce emissions to 1990 levels by 2020. California is on track to meet, and possibly exceed, that mark, officials say. Governor Brown has been positioning California as a world leader in efforts to curb climate change ahead of the United Nations climate talks in Paris at the end of this year.
28 Apr 2015:
World Is Poised for Major
Surge in Air Conditioner Use, Research Finds
The world is on track for dramatic increases in the use of air conditioning over the next few decades, which will place even
Air conditioners in Chinese apartment complex.
more stress on power grids and energy prices than scientists had previously thought, according to
research from the University of California, Berkeley. Looking at households throughout Mexico, the researchers found that, in the warm areas, air conditioning use increases steadily with income — 2.7 percent per $1,000 of annual household income. The team used those findings, along with population, climate, and household income projections, to model future growth in air conditioner use across the globe. Conservatively, they say, the model predicts near-universal saturation of air conditioning in all warm areas within just a few decades. That will place enormous stress on the energy infrastructure of some nations — India, for example, is already experiencing blackouts during surges in power use — and will drive up energy costs worldwide.
27 Apr 2015:
Oceans Are the World's
Seventh Largest Economy, New Report Says
The world's oceans are worth an estimated $24 trillion and produce $2.5 trillion annually in goods and services, according to
Coral reefs are threatened by ocean acidification.
by WWF, Boston Consulting Group, and the Global Change Institute. If the global ocean ecosystem were a single nation, it would represent the world's seventh largest economy, the report says, providing goods such as fish catches and aquaculture and services such as coastal storm protection, shipping, and tourism. The oceans' assets are dwindling, though, due to threats such as ocean acidification, over-exploitation of fish stocks, and degradation of coral reefs, which could disappear completely by 2050, according to research cited in the report. The trends could be reversed, the report says, if global governments take strong action to curb climate change and if coastal countries make swift efforts to protect nearby marine ecosystems.
24 Apr 2015:
Long-Term CO2 Record by Keeling
Named National Historic Chemical Landmark
The Keeling Curve — a long-term record of rising carbon dioxide in the planet’s atmosphere — will be named a National Historic
Chemical Landmark, the American Chemical Society announced
yesterday. The late geochemist Charles David Keeling began collecting precise, systematic data on atmospheric CO2 concentrations at Hawaii's Mauna Loa Observatory in 1958. Since then, the rigorous and continuous measurements have become the most widely recognized record of humans' impact on the planet, helping to illustrate the link between rising CO2 levels from burning fossil fuels and global warming. Other works highlighted by National Historic Chemical Landmark program include the discovery of penicillin, deciphering of the genetic code, and the works of Rachel Carson, Thomas Edison, and George Washington Carver.
22 Apr 2015:
Yale Plans to Charge University
Departments for Their Carbon Emissions
Yale University has announced
that it will enact a novel carbon-pricing mechanism in the next academic year in hopes of curbing its greenhouse gas emissions. Devised by a committee led by economist William Nordhaus — an expert on the intersection of climate change and economic policy — the program will operate in a pilot phase for three years before possibly going into full effect, the university said. According to the committee's report, departments within the university would be charged based on how much their carbon emissions deviated from average levels in the past. The report recommends a price of $40 per ton of carbon dioxide, which is based on current federal legislation and the government's estimates for the social cost of carbon. "We didn't see anything like this" when reviewing other institutions' carbon-pricing schemes, Nordhaus told E&E News
, saying he believes Yale's program is the first and most comprehensive of its kind.
21 Apr 2015:
Australia Could Attain
100 Percent Renewables by 2050, Study Says
Australia could reduce its greenhouse emissions significantly and transition to an economy
Windy Hill wind farm in Queensland, Australia.
predominantly fueled by renewable energy for very little cost, according to
an analysis by the Australian National University and WWF. The country could generate 100 percent of its electricity from renewables and have zero net emissions by 2050 because wind and solar technologies have fallen rapidly in price in recent years and Australia is the world's sunniest and windiest continent. Any progress, however, will depend on the government's willingness to set clear, long-term policies and regulations encouraging renewable energy use, the authors note. Under conservative Prime Minister Tony Abbott, Australia's current climate action plan calls for only a five percent cut in emissions from 2000 levels over the next five years.
16 Apr 2015:
Researchers Discover New
Source of Methane in the Arctic Ocean
A large reservoir of methane — a greenhouse gas many times more potent than carbon dioxide — was recently discovered on
Knipovich Ridge in the Arctic Ocean
Knipovich Ridge in the central Arctic Ocean, according to
research published in the journal Geology
. The methane in this deposit is locked up in icy crystals of water and gas called hydrates, and it was produced by abiotic geological processes rather than by microbes breaking down organic matter, as most methane is, the authors explain. Until now, scientists had not known that hydrates could contain this type of methane. "Up to 15,000 gigatons of carbon may be stored in the form of hydrates in the ocean floor, but this estimate is not accounting for abiotic methane," said co-author Jürgen Mienert. "So there is probably much more."
Interview: For Buddhist Leader,
Religion and Environment Are One
Ogyen Trinley Dorje, spiritual leader of a 900-year-old lineage of Buddhism, says his deep concern for environmental issues
His Holiness the 17th Karmapa
stems from his boyhood living close to the land on the Tibetan plateau. Now, as His Holiness the 17th Karmapa, he is promoting a program that seeks to instill good environmental practices in Buddhist monasteries in the Himalayan region. In an interview with Yale e360
, the Karmapa talks about how ecological awareness fits with the Buddhist concept of interdependence, why the impacts of climate change in the Himalaya are so significant, and what role religion can play in helping meet the world’s environmental challenges. “The environmental emergency that we face is not just a scientific issue, nor is it just a political issue,” he says. “It is also a moral issue.”
Read the interview.
15 Apr 2015:
Entries Invited for e360
Contest For Best Environmental Videos
The second annual Yale Environment 360 Video Contest is now accepting entries. The contest honors the best environmental videos. Entries must be videos that focus on an environmental issue or theme, have not been widely viewed online, and are a maximum of 15 minutes in length. Videos that are funded by an organization or company and are primarily about that organization or company are not eligible. The first-place winner will receive $2,000, two runners-up will each receive $500, and all winning entries will be posted on Yale Environment 360
. The contest judges will be Yale Environment 360
editor Roger Cohn, New Yorker
writer and e360
contributor Elizabeth Kolbert, and documentary filmmaker Thomas Lennon. The deadline for entries is June 15, 2015.
15 Apr 2015:
Japan Emissions Hit Near-Record
High After Nuclear Power Plant Closings
Japan's carbon dioxide emissions reached their highest levels since 2007 last year, according to a government analysis of data
The Kashiwazaki-Kariwa nuclear plant in Japan.
for the year ending in March 2014. Greenhouse gas emissions had been on a downward trend as the country replaced coal and natural gas power stations with nuclear plants. However, all 48 of Japan's nuclear power reactors have been offline since September 2013 — the result of rigorous safety checks enacted after the 2011 Fukushima disaster, Reuters reports
. The country has increased natural gas and coal consumption to fill the void left by nuclear power, which had accounted for 26 percent of its electricity generation. Reports say the country is considering committing to a 20 percent decrease in CO2 emissions by 2030 as part of the upcoming Paris climate negotiations.
14 Apr 2015:
Canada Could Lose 70 Percent
Of Glaciers by End of Century, Study Finds
British Columbia and Alberta could lose 70 percent of their glaciers by the end of the 21st century, creating major problems
Berg Glacier in British Columbia
for local ecosystems, power supplies, and water quality, according to a study in Nature Geoscience
. Wetter coastal mountain regions in northwestern British Columbia are expected to lose about half of their glacial volume, the researchers found, but the Rocky Mountains, in the drier interior portion of Canada, could lose 90 percent of their glaciers. “Soon our mountains could look like those in Colorado or California and you don’t see much ice in those landscapes,” said Garry Clarke, lead author of the study. Alberta and British Columbia have more than 17,000 glaciers and they play an important role in hydroelectric power production. The glaciers also contribute to the water supply, agriculture, and tourism, but the greatest impact of their loss could be on freshwater ecosystems, the researchers say.
10 Apr 2015:
Coal Power Plant Closings
To Spur Large CO2 Cut in U.S. in 2015
Thanks to the closing of a record number of coal-fired power plants, emissions from the U.S. power sector in 2015 are expected to fall 15 percent below 2005 levels
, according to an analysis by Bloomberg New Energy Finance. The report said that seven percent of the U.S.’s coal-fired power capacity will be shut down this year, and that on the basis of emissions per-unit-of-power-generated, 2015 will be the cleanest year in more than 60 years. The loss of coal-fired power is being made up by cleaner natural gas-fired plants and by rapid growth of renewable energy, Bloomberg noted. U.S. solar power installations are expected to hit a record 9.1 gigawatts, led by California, and wind power installations should hit 8.7 gigawatts, led by Texas. “In 2015 we’ll take a giant, permanent step towards decarbonizing our entire fleet of power plants,” said analyst William Nelson.
09 Apr 2015:
Melting Arctic Permafrost
To Cause Massive but Gradual CO2 Release
A comprehensive new study of the potential climate change impacts of melting Arctic permafrost says that a vast amount of carbon dioxide will be released from thawing permafrost but that it will seep out gradually,
rather than in an abrupt “carbon bomb.” Working since 2011, a group of 17 Arctic permafrost scientists studied the rate at which permafrost is thawing and the resulting release of CO2. The scientists concluded that Arctic permafrost has undergone a stunning degree of warming, rising from an average of 18 F three decades ago to 28 F today. As permafrost continues to melt, it will release an amount of carbon roughly equal to the carbon released from current rates of deforestation, the study said. The study, published in the journal Nature
, said the CO2 release from thawing permafrost will be prolonged but gradual, giving society time to adapt to rising seas and other impacts of a warming climate.