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 Environment 360
, 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.
08 Apr 2015:
Clay Shows Promise in
Capturing CO2 from Power Plants
Common clay can be just as effective as more advanced materials in capturing carbon dioxide emissions
from power plants, according to research by Norwegian and Slovak scientists. One particular type of clay mineral, known as smectite, was especially effective in absorbing CO2 emissions, the researchers said in the journal Scientific Reports.
One possible use for clay would be to incorporate it into filters or scrubbers in smokestacks at power plants, the scientists said. They said their research into clay’s CO2-absorbing capabilities is preliminary and would not be available for commercial use anytime soon. But the scientists said clay offers many benefits compared to some other expensive and potentially toxic CO2-scrubbing materials.
06 Apr 2015:
Millions of Acres of Grasslands
Cleared For Biofuel Crops, Study Finds
Biofuel crops expanded onto 7 million acres of new land in the U.S. over a recent four-year period, replacing millions of
Soybeans are a source of biodiesel fuel.
acres of grasslands, according to
new research from the University of Wisconsin. Using high-resolution satellite imagery, the researchers calculated that converting grasslands to croplands for corn and soy biofuels could have emitted as much carbon dioxide as 34 coal-fired power plants operating for one year, or the equivalent of an additional 28 million cars on the road. Nearly 80 percent of cropland expansion replaced grasslands, which store large amounts of carbon in their soils, according to the report published in Environmental Research Letters
. The study is the first comprehensive analysis of land-use change across the U.S. between 2008 and 2012, following the passage of the federal Renewable Fuel Standard.
02 Apr 2015:
Complexity of Ocean Heating and
Circulation Shown in Vibrant Simulation
This swirling, vibrant visualization of global water-surface temperatures from Los Alamos National Laboratory
Global ocean surface temperatures
the complexity of ocean circulation and heat absorption
. Cool temperatures appear as blues and greens while warmer waters are red and yellow. A clear temperature divide exists between waters in the Northern Hemisphere and those in the Southern Hemisphere. Researchers say that oceans south of the equator have absorbed substantially more heat over the past decade. Vortices near the surface, which play key roles in ocean circulation, appear as swirls on this map.
01 Apr 2015:
Curbing Global Warming Aligns
With U.S. Christians' Beliefs, Survey Finds
A majority of American Christians think global warming is happening and that the government should support research and
Majorities of U.S. Christians say global warming is real.
tax policies that promote renewable sources of energy and energy efficiency, according to a new report
from the Yale Project on Climate Change Communication. Among Catholics, 69 percent think global warming is happening, which is a higher percentage than Americans overall (63 percent). A majority of non-evangelical Protestants — 62 percent — also think global warming is occurring, as do 51 percent of evangelicals. The survey also found that majorities of Catholics, Protestants, and evangelicals say it is important to them personally to care for future generations, the natural environment, and the world’s poor. Of the three groups, evangelical Christians were the most likely to say that God expects people to be responsible stewards of nature.
30 Mar 2015:
Warming Winters Not Main
Cause of Pine Beetle Outbreaks, Study Says
Milder winters can't be blamed for the full extent of recent mountain pine beetle outbreaks in the western United States, according
Pine forest affected by mountain pine beetles
to a new study
by Dartmouth and U.S. Forest Service researchers. Winters have been warming across the western U.S. states for decades, as overall the coldest winter night has warmed by 4 degrees C since 1960. But that warming trend could only be the primary driver of increasing pine beetle outbreaks in regions where winter temperatures have historically killed most of the beetles, such as in the Middle Rockies, eastern Oregon, and northern Colorado, the study says. Warming is unlikely to have played a major role in other regions since winters were rarely cold enough to kill the beetles, according to the study published in the journal Landscape Ecology
. Other factors — including changes in the pine beetles' seasonal development patterns and forestry practices that have influenced pine density and age — were likely more important, the authors say.
20 Mar 2015:
Glacial Melt and Precipitation
Create Massive Runoff in Gulf of Alaska
Rapidly melting glaciers, rain, and snow are combining to dump a massive amount of freshwater
into the Gulf of Alaska,
Gulf of Alaska
with important implications for ocean chemistry and marine biology, according to a new study. So much meltwater is now flowing into the Gulf of Alaska that if all the streams and other runoff sources were combined it would create the world’s sixth-largest coastal river, according to research in The Journal of Geophysical Research: Oceans.
The collective discharge into the Gulf of Alaska is more than four times greater than the Yukon River and 50 percent greater than the Mississippi River. They found that glaciers surrounding the Gulf of Alaska are melting and retreating at a swift pace, creating an important source of meltwater. Researchers said this flood of freshwater affects ocean temperature, salinity, currents, marine biology, and sea level.
19 Mar 2015:
Electric Vehicles Keep Cities
Cooler than Gas-Powered Cars, Study Says
Electric vehicles emit 20 percent less heat than gas-powered cars, which helps mitigate the urban heat island effect and
An electric car recharges its battery.
could lead to lower air conditioner use in major cities, according to research published in the journal Scientific Reports
. Heat emanating from vehicles is an important contributor to the heat island effect — the difference between temperatures in heavily urbanized areas and cooler rural regions — and a shift toward electric vehicles could help, the researchers say. They used data from Beijing in the summer of 2012 to calculate that switching vehicles from gas to electricity could reduce the heat island effect by nearly 1 degree C. That would have saved Beijing 14.4 million kilowatt hours of electricity from air conditioning and cut carbon dioxide emissions by 11,779 tons per day, the study says.
16 Mar 2015:
El Niño and La Niña Can Predict
Severity of Tornado Season, Study Says
El Niño and La Niña conditions can help predict the frequency of tornadoes and hail storms in some of the most
Tornado near El Reno, Okla., in May 2013.
susceptible regions of the U.S., new research
published in the journal Nature Geoscience
shows. Scientists have been using El Niño and La Niña conditions, which can be identified months before the climate cycles actually develop, to make more accurate forecasts of droughts, flooding, and hurricane activity. Now, a team of researchers says they can also forecast how active the spring tornado season will be based on the state of El Niño or La Niña in December, and sometimes even earlier. Moderately strong La Niña events lead to more tornadoes and hail storms over portions of Oklahoma, Texas, Kansas, and other parts of the southern U.S., the study shows, whereas El Niño patterns suppress the storms. Scientists have detected El Niño conditions over the past few weeks, which indicates that this spring will be a relatively quiet one for severe storms in the southern U.S., the authors say.
12 Mar 2015:
Bubbling From Melting Glaciers
Makes Fjords Noisiest Places in Oceans
Bubbles gushing from melting glaciers and their icebergs make fjords the noisiest places in the oceans, according to
research published in Geophysical Research Letters
. Researchers used underwater microphones to record noise levels in three bays where glaciers flow into ocean fjords and icebergs calve from glaciers. They found that average noise levels from bubbles in these fjords exceeded those generated by all other sources, including weather, wildlife, and machines such as ships and sonar devices. Glacial calving contributed some of the noise, but the constant melting and bubbling was the real culprit, the researchers said. Their findings raise questions about how the underwater noise in the fjords — which are foraging hotspots for seabirds and marine mammals and important breeding habitat for harbor seals — will affect animals as climate change further increases melting rates.
11 Mar 2015:
Warming To Sharply Increase
For Remainder of 21st Century, Paper Says
Within a decade, the earth — and particularly the northern hemisphere — will begin warming at rates unprecedented in the last 1,000 to 2,000 years, according to new research
in the journal Nature Climate Change
. Examining the rate of temperature increases in 40-year intervals over the past 2,000 years, the scientists concluded that temperatures had fluctuated up or down by about 0.2 degrees F over each interval. In the past 40 years, however, warming has approached 0.4 degrees F per decade. And beginning in 2020, temperatures could start to rise by 0.7 degrees F per decade and continue at that rate until at least 2100. Warming will be especially pronounced in the Arctic, where temperatures are expected to soar by 1.1 degrees F by 2040. The scientists warned that such greenhouse gas-driven warming is moving the planet into an unstable climatic state.
10 Mar 2015:
Solar and Wind on Track to
Dominate New U.S. Power Capacity in 2015
U.S. electric companies expect to install more than 20 gigawatts (GW) of utility-scale generating capacity this year and
Power generating capacity set to come online in 2015.
60 percent of that will be wind and solar power, according to a U.S. Energy Information Administration analysis
. Energy companies plan to retire 16 GW of generating capacity this year, EIA numbers show, and 81 percent of that will be coal-fired power plants. The large number of coal plant retirements can be attributed to the EPA's Mercury and Air Toxics Standards, which are slated to go into effect this year. Many companies decided that shuttering coal generators would be more cost effective than retrofitting them to meet the new standards, the EIA said. Natural gas power plants — which, although they burn fossil fuels, emit significantly less carbon than coal-fired plants — will make up roughly 32 percent of the additional capacity.
09 Mar 2015:
Blue Crabs Are Moving Into
Gulf of Maine's Warming Waters, Study Says
Blue crabs have become the first documented commercially important species to move into the Gulf of Maine
Blue crab caught 80 miles north of its historic range.
a migration that may be driven by climate change, according to ecologist David Johnson of the Marine Biological Laboratory. Although the historic northern limit of the blue crab is Cape Cod, Massachusetts, scientists and resource managers have observed blue crabs as far north as northern Maine and Nova Scotia, Canada. Johnson says that warmer ocean temperatures in 2012 and 2013, which were 1.3 degrees C higher than the previous decade's average, allowed the crabs to move north. In the 1950s, blue crabs were observed in the gulf during a time of warmer waters, Johnson notes in the Journal of Crustacean Biology
, but once the gulf returned to average temperatures, the crabs disappeared. He added that "recent observations of blue crabs may be a crystal ball into the future ecology of the Gulf of Maine."
Interview: What Lies Behind the
Surge of Deforestation in Amazon
Ecologist Philip Fearnside has lived and worked in the Brazilian Amazon for 30 years and is one of the foremost authorities on
deforestation in the world’s largest tropical forest. A professor at the National Institute for Research in the Amazon, Fearnside is now watching with alarm as, after a decade of declining deforestation rates, the pace of cutting in the Amazon is on the rise again. In an interview with Yale Environment 360
, Fearnside explains the factors behind the resurgence in deforestation and warns that the Amazon will sustain even graver losses if Brazil’s newly re-elected President Dilma Rousseff — who is backed by large landowners and agribusiness interests — doesn’t change course.
Read the interview.
05 Mar 2015:
Shifting to Electric Power
From Oil Not Always the Greener Choice
Transitioning from fossil fuels to electric-powered technology is widely believed to be an effective way to lower carbon emissions. However, as a new Nature Climate Change
report explains, that calculus changes significantly if the electricity is produced by burning coal or oil. For electrification to lower emissions, a region must produce its electricity with less than 600 tons of carbon dioxide equivalent per gigawatt hour (GWh), the report says. If a region's electricity production exceeds this 600-ton threshold — as it does in India, Australia, and China, for example — moving to electricity may increase carbon emissions and accelerate climate change. "You could speculate that incorporating electrified technologies such as high speed rail in China may not lower overall emissions," says Chris Kennedy, a University of Toronto engineer who authored the study. "It might even be more carbon friendly to fly."