15 Dec 2015:
China Anti-Pollution Efforts
Lead to Steep Drop in Sulfur Dioxide Levels
Emissions of sulfur dioxide, a toxic gas that threatens human health and causes acid rain, have dropped sharply in the last decade
China's sulfur pollution has decreased in recent years.
in China, thanks to aggressive air pollution control initiatives by the Chinese government. As these NASA images show, levels of sulfur dioxide in China fell significantly from 2005 to 2014, while emissions of the gas increased in India during the same period. From 2012 to 2014, Chinese SO2 emissions fell especially sharply, by 50 percent. The steady drop in emissions of the noxious gas, released during the burning of coal and other fossil fuels, can be attributed to pollution control measures enacted before the 2008 Beijing Olympics, the widespread installation of flue gas desulfurication devices on power plants, the switch to coal with a lower sulfur content, and the closing of coal-fired power plants in favor of less-polluting energy sources such as natural gas, wind, and solar power. India’s sulfur dioxide emissions have risen because of the rapid expansion of coal-fired power plants.
12 Dec 2015:
Landmark Agreement on Climate
Is Reached in Paris to Cap Warming
Climate negotiators meeting in Paris have achieved a deal
that could change the world. The Paris Agreement commits the
UN Secretary General Ban Ki-moon and other leaders
international community to capping global warming to "well below 2 degrees Celsius above pre-industrial levels and pursuing efforts to limit the temperature increase to 1.5 degrees C." To achieve that, the agreement requires the world to "reach global peaking of greenhouse gas emissions as soon as possible" and "to undertake rapid reductions thereafter, in accordance with best available science." The intention is to reduce net greenhouse gas emissions to zero in the second half of this century. "This agreement is a turning point," said Johan Rockström of the Stockholm Resilience Center.
10 Dec 2015:
Paris COP21: An Unexpected Move
Toward Global Target of 1.5 Degrees
It is the big surprise of the Paris talks: the growing acceptance of a call from small nations most vulnerable to climate change
for the conference to declare warming should be halted at 1.5 degrees Celsius. Even a few months ago, this seemed unimaginable. Two degrees was the only target on the table. But here it has gained momentum with more than 100 nations, including the U.S. and the EU, agreeing it should be in the final agreement. With more than a day of talks remaining, inclusion is far from a done deal. But it has strong support. A 1.5-degree target “looks much more scientifically justifiable,” said Johan Rockström, director of the Stockholm Resilience Institute.
09 Dec 2015:
Paris COP21: U.N. Climate Talks
Could Hasten the Demise of Coal
Is Paris the beginning of the end for coal? Coal burning is declining fast in both of the world's two largest carbon dioxide emitters,
China’s air pollution is pushing it away from coal.
China and the U.S., with resulting declines in emissions for both countries. The fuel looks incompatible with a world that warms by no more than two degrees C, bringing calls for its rapid phaseout as the global economy is "decarbonized." But, with or without a deal in Paris later this week, will the calls be heeded? Has the demise of King Coal been greatly exaggerated? The smart money in Paris is betting that, despite the embrace of coal by some developing countries such as India and Turkey, the dirty fossil fuel’s days are numbered. "The inevitable conclusion we can draw on the future of global thermal coal is that it has none," an energy analyst said in Paris.
07 Dec 2015:
Soaring Global CO2
Emissions May Have Peaked, Data Show
CO2 emissions in 2015, at 35.7 billion tons, are likely to be exactly where they were two years ago, according to a new study
Global CO2 emissions are projected to fall in 2015.
published in the journal Nature Climate Change
. The flat-lining emissions trajectory is the result of China's recent sharp decline in coal burning and the global surge in renewables like wind and solar power, said Corinne Le Quéré, director of the Tyndall Centre at the University of East Anglia in Norwich, England, who led the analysis. The study estimates China's emissions have fallen by 3.9 percent this year. Le Quéré said she does not believe the world has yet hit "peak emissions." Continued rapid industrial expansion by countries such as India that still rely on coal for energy means further rises probably lie ahead, she said. But the evidence is growing that peak emissions may be closer than previously imagined.
04 Dec 2015:
Paris COP21: Global Financiers Hop
Aboard the Zero-Carbon Bandwagon
Outside the conference hall where the Paris climate negotiations are taking place, a large crowd gathered in the bright sun on
Bank of England governor Mark Carney
Friday morning, chanting for an end to government subsidies for fossil fuels. Yards away, a meeting of financiers and bankers got under way in which a central demand was for, well, much the same thing. Something strange has happened here. The masters of the financial universe are out in force insisting that, though they may not be waving placards or chanting slogans, they are part of the solution. Free markets could deliver a zero-carbon world, they say. And Mark Carney, the governor of the Bank of England and a leading player in the global financial system, announced the creation of a task force to develop a carbon-disclosure system that could force companies to reveal how heavily their businesses are invested in fossil fuels. He said it could become standard business practice around the world — carbon footprinting for financiers.
03 Dec 2015:
Paris COP21: Is India the Main
Stumbling Block at Climate Talks?
By some measures India has offered a lot to the Paris neogitations. Its pledge on future emissions includes perhaps the
Indian Prime Minister Narendra Modi
most ambitious renewable energy program in the world, with 175 gigawatts of green power, including 100 megawatts of solar panels, by 2022. But many nonetheless see India as the biggest single threat to curbing CO2 emissions in the next few decades. The problem is coal. The speed of India's current industrialization is so fast that, even with a huge surge in solar energy, it still plans the world's fastest rate of construction of coal-fired power stations. India's continued reliance on coal will increase its CO2 emissions by 60 per cent by 2030. And that addiction to coal is making enemies among countries that India would normally count as its friends – poor nations most at risk from climate change.
02 Dec 2015:
Paris COP21: China’s About-Face
Fuels High Hopes for Paris Talks
China has changed everything. After years of sulking about climate change, China is right now diplomatically and technologically
A worker installs solar panels in eastern China.
transforming the chances of slowing global warming. President Barack Obama might wish for a deal here at U.N. climate negotiations in Paris to be his own crowning legacy. But the truth is that this is China's ball. Nobody personifies the transformation better than the head of the Chinese climate delegation for the past nine years, Xie Zhenhua. He spent years pretending climate change was a developing-world problem that the rich nations had to sort out, and he was widely blamed for scuppering the 2009 Copenhagen climate negotiations. But here in Paris he is quietly confident a deal is about to be done that will be in China's and the world's interests. "China is entering a new normal of energy and resource conservation,” he said. "We can seek a different way [through] ecologically driven wealth generation."
Complete Coverage of the Paris COP21
Climate Talks From Yale Environment 360
30 Nov 2015:
Paris COP21 — Obama, Xi Vow to
Lead In Climate Fight as Paris Talks Open
Joining leaders from 150 nations in Paris, President Barack Obama acknowledged the U.S.’s special responsibility as the major historical emitter
U.N. climate chief Figueres greets President Obama
of greenhouse gases and vowed that the U.S. would take a leading role in fighting climate change, which he called the central challenge of the 21st century. “The United States of America not only recognizes our role in creating this problem, we embrace our responsibility to do something about it,” Obama said at the opening of United Nations climate talks. He vowed that the U.S. and other developed nations would provide aid for renewable energy development and climate adaptation to developing nations, which he said had “contributed little to climate change but will be the first to feel its most destructive effects.” Chinese President Xi Jinping said that his country would meet its goal of hitting peak emissions by 2030
, with steady declines thereafter.
25 Nov 2015:
Airlines Could Halve Emissions
By 2050 by Making Cost-Saving Changes
Airlines could cut their greenhouse gas emissions in half over the next 35 years by making changes that would actually
Cost-effective changes could cut airline emissions.
save them money, according to
research published in the journal Nature Climate Change
. Researchers developed a list of 14 strategies, all based on current technologies, that airlines could pursue to cut emissions, which account for roughly 2 to 3 percent of the total carbon dioxide added to the atmosphere each year. For example, one recommendation is to keep planes at the gate until takeoff rather than making them idle on the runway, or to use fewer engines — perhaps even electric engines — when taxiing. Emissions could also be cut significantly by reducing aircraft weight, the researchers say, such as by lowering the amount of extra fuel carried or replacing seats and brakes with ones made from lighter materials. Updating flight paths to more direct routes, adjusting altitude and speed to avoid drag-inducing turbulence, and retiring older planes would also cut costs and emissions.
24 Nov 2015:
Transportation and Buildings
Drove Rise in U.S. Energy Emissions Last Year
Energy-related carbon dioxide emissions in the U.S. rose last year by 1 percent, marking the second consecutive year of
Low fuel prices drove higher vehicle emissions.
increased energy emissions despite advances in efficiency and growing use of less carbon-intensive fuels, such as natural gas. The transportation sector and residential and commercial buildings largely drove the increase, the U.S. Energy Information Administration
reports. Lower fuel prices and an improving economy led to more consumption of gasoline and other fuels, the EIA says, which more than offset gains in vehicle fuel economy. Emissions from commercial and residential buildings also rose last year. While residential energy use is mainly driven by weather on a year-to-year basis — the first quarter of 2014 was particularly cold in many regions — both weather and economic gains led to more energy consumption in commercial buildings, the report says. Looking at energy emissions by another measure, the U.S. made better progress, as CO2 emissions per unit of gross domestic product declined.
23 Nov 2015:
In Major Shift, Alberta
Adopts New Plans to Fight Climate Change
In a sharp reversal from the previous government, Alberta’s recently elected premier has announced a host of new climate measures
, including a tax on carbon, the phase-out of coal emissions by 2030, a transition to
renewable energy sources, and CO2 emissions limits on the province’s massive tar sands industry. Premier Rachel Notley said Sunday that the province will adopt an economy-wide carbon tax of 20 Canadian dollars in 2017, increasing to 30 dollars in 2018. She vowed that two-thirds of the electricity now produced by coal-fired power plants will be replaced with renewable energy. And she said Alberta will impose a carbon emissions limit on the oil sands industry of 100 megatons; the industry currently generates 70 megatons of carbon annually. “This is the day we step up, at long last, to one of the world’s biggest problems: the pollution that is causing climate change," Notley said.
Interview: Why Brazil’s Pledges On
Carbon Emissions Are Not Enough
In recent years, Brazil has been widely praised for reducing deforestation in the Amazon by 75 percent from 2005 to 2014.
Maria Fernanda Gebara
But analysts are now taking a closer look at Brazil’s pledges to cut deforestation and greenhouse gas emissions, with some saying there is less there than meets the eye. One of the more outspoken critics of the country’s CO2-reduction policies is Brazilian political scientist Maria Fernanda Gebara. In an interview with Yale Environment 360
, Gebara, a research associate in the Department for International Development at the London School of Economics, says Brazil’s policies will do little more than stabilize emissions for the next 15 years, will fail to clamp down on illegal logging, and will continue the nation’s dismal record of developing solar and wind power.
Read the interview.
11 Nov 2015:
Renewable Diesel Production and
Demand Growing Worldwide, Report Finds
A new type of renewable, non-petroleum-based diesel fuel is on the rise worldwide, according to the U.S. Energy Information Administration
with demand driven by mandates in multiple countries. Unlike other biofuels, renewable HEFA biofuels — the acronym stands for hydroprocessed esters and fatty acids, and the fuels are known as "renewable diesel" in the U.S. — are nearly indistinguishable from their petroleum counterparts, meaning they can serve as "drop-in" fuels, readily substituting for traditional diesel. For example, they can be used in diesel engines without the need for blending with petroleum diesel fuel. Worldwide, more than a billion gallons of HEFA fuels were produced in 2014. Ten plants worldwide now produce renewable diesel, and five additional projects are in development. Alaska Airlines, KLM, and United Airlines have demonstrated the use of HEFA biojet fuel on commercial flights since 2011.
06 Nov 2015:
Obama Rejects Keystone XL
Pipeline, Ending a Seven-Year Battle
President Barack Obama has rejected a Canadian company’s request
to build the Keystone XL Pipeline, which would have carried 800,000 barrels of oil a day from Alberta’s tar sands to refineries on the U.S. Gulf Coast. The decision is a major victory for climate and conservation groups and burnishes Obama’s legacy in the battle to slow global warming. Obama’s announcement, made after a seven-year review by the U.S. State Department and other agencies, comes just weeks ahead of key United Nations climate talks in Paris. In remarks at the White House, Obama said that the economic benefits of building the pipeline were outweighed by the high environmental costs of helping move to market tar sands crude, whose production is among the most carbon-polluting on the planet. “The pipeline would not make a meaningful long-term contribution to our economy,’’ Mr. Obama said in remarks at the White House.
06 Nov 2015:
Austria’s Largest State Now
Generates All Electricity from Renewables
The electricity supply in Lower Austria, the largest state in Austria, is now fossil-free,
state officials have announced. The state in northeastern Austria, which has a population of 1.65 million, now gets 63 percent of its electricity from hydroelectric power, 26 percent from wind energy, nine percent from biomass, and two percent from solar. While hydroelectric power has always generated a large portion of the state’s electricity, Premier Erwin Proell said that $3 billion in investments since 2002 in utility-scale solar and other renewables had helped the state reach the 100 percent renewables target. Proell said the expansion of renewables has created 38,000 green jobs in the state, with the aim of generating 50,000 jobs in the renewables sector by 2030. Throughout Austria, 75 percent of electricity generation now comes from renewable energy sources.
29 Oct 2015:
Southeast Asian Nations Plan
Major Hydropower Projects Along Mekong
Although China's hydroelectric
development — particularly the world's largest power plant at Three Gorges Dam — has garnered significant attention,
Hydropower projects planned by smaller Southeast Asian nations
other Southeast Asian nations have relatively large hydropower expansion plans of their own, the U.S. Energy Information Administration
says. Those smaller nations plan to construct 61 gigawatts of new capacity through 2020, primarily along the Mekong River and its tributaries. If all planned projects are completed, these countries will more than double their 2012 hydroelectric capacity. As of 2010, 71 Mekong hydroelectric dams were proposed for completion by 2030. Vietnam has the most ambitious hydroelectric development plan, with 205 hydroelectric projects — 6.2 gigawatts — slated for development by 2017 and nearly 4 gigawatts of additional capacity by 2030. Environmental groups have major concerns
about the environmental impacts of damming the Mekong River system and other rivers in Southeast Asia.
Interview: ‘Third Way’ Technologies
Could Help Turn the Tide on Climate
Massive seaweed farms that suck carbon dioxide out of the atmosphere and counteract ocean acidification. The widespread adoption of carbon
fiber technology that extracts CO2 from the air and turns it into cars and other industrial products. Concrete manufacturing that is carbon-negative rather than the energy-guzzling Portland cement used today. These and other ideas represent what Australian scientist Tim Flannery calls “third way technologies” — safe methods to reduce carbon dioxide levels that could be adopted in concert with large-scale reductions in greenhouse gas emissions. In an interview with Yale Environment 360
, Flannery explains that unlike risky geo-engineering schemes, these approaches “strengthen Earth’s own self-regulatory system by drawing CO2 out of the atmosphere in ways the planet naturally does already.”
Read the interview.
20 Oct 2015:
California Solar Development
Often Occurring On Wilderness Lands
More than half of the large solar energy installations that have been built or are planned in California are being
constructed on undeveloped lands
Solar power plant in California's Mojave Desert
rather than in previously developed, less-sensitive areas, according to a new study. Researchers at the University of California, Berkeley, said that of 161 planned or operating utility-scale solar power developments in the state, more than 50 percent are being located on natural shrub or scrublands, such as the Mojave Desert. About 28 percent have been built on agricultural land and 16 percent have been built in developed areas, according to the study
, published in the Proceedings of the National Academy of Sciences. The researchers said that it makes far more sense for the state’s robust solar power industry
to locate its installations on farmland, especially considering the severity of California's ongoing drought.
15 Oct 2015:
Gates Calls Divestment
A `False Solution’ to Global Warming
Bill Gates, the founder of Microsoft and co-chair of the Bill and Melinda Gates Foundation, has called the fossil fuel divestment campaign a “false solution”
to climate change and says the best way to decarbonize the global economy is by developing revolutionary renewable energy technologies. “We need an energy miracle,” Gates told The Atlantic magazine.
“That may make it seem too daunting to people, but miracles in science are happening all the time.” Gates said he is pledging $2 billion of his foundation’s endowment to research and develop alternative energy technologies. He criticized the divestment movement
for “using up (campaigners’) idealism and energy on something that won’t emit less carbon.” The Gates Foundation, the world’s largest charitable organization, has $1.4 billion invested in fossil fuel companies, and activists have been calling on Gates to sell those holdings.
14 Oct 2015:
Toyota Vows to Eliminate
Nearly All of Its Gasoline Cars by 2050
The global automobile giant, Toyota, has announced plans to steadily phase out production of gasoline-powered cars
and to slash emissions from its fleet by 90 percent by 2050. Speaking in Tokyo, Toyota executives vowed to work with government officials and other companies to replace internal combustion cars with hydrogen fuel cell vehicles and hybrids. “You may think 35 years is a long time, but for an automaker to envision all combustion engines as gone is pretty extraordinary,” said a senior Toyota executive. The company said that by 2020 annual sales of its hybrid vehicles will reach 1.5 million and sales of fuel cell vehicles will hit 30,000 — 10 times the projected figure for 2017. Meanwhile, Volkswagen, shaken by scandal over falsifying emissions data on its diesel cars, announced it will increasingly shift production
to hybrid and electric vehicles.
12 Oct 2015:
New Head of IPCC
Calls For Shift from Science to Solutions
The new chairman of the Intergovernmental Panel on Climate Change says it’s time for the global scientific body to shift from documenting the impacts of climate change to finding solutions to global warming.
Hoesung Lee, a South Korean economist who was chosen by the IPCC last week to replace former chairman Rajendra Pachauri, told the Guardian that the window to begin slashing greenhouse gas emissions is “closing very rapidly” and said that the IPCC must help spur a move toward the widespread adoption of renewable energy technologies. He said that while the IPCC, which periodically issues voluminous scientific reports on climate change, had been doing a “fantastic job” of identifying the problem, “I believe the next cycle of the IPCC should be more focused on opportunities and solutions.” Lee said that placing a global price on carbon would be “the most important building block” for reducing CO2 emissions to zero by 2100.
Interview: Rallying Hip Hop For
A More Inclusive Climate Fight
For the Rev. Lennox Yearwood Jr., hip hop may be the key to bringing together the movements for social and environmental justice.
Rev. Lennox Yearwood Jr.
Yearwood is head of the Hip Hop Caucus
, an advocacy organization seeking to unite hip hop artists and celebrities with climate activists
, with the goal of fighting for climate justice. In an interview with Yale Environment 360
, Yearwood describes how the environmental, climate, and social justice movements are linked — poverty and pollution, he says, “are the same thing.” He extols Pope Francis’ emphasis on the vulnerability of the poor to pollution and climate change and insists that the climate movement must become far more inclusive. “The movement — to win — has to be everybody: black, white, brown, yellow, male, female, straight, gay, theist, atheist,” says Yearwood. “We have to build a more diverse and inclusive movement. If we don’t do that, it’s game over. We lose.”
Read the interview.
07 Oct 2015:
Africa Can Increase Renewable
Energy Use Four-Fold by 2030, Study Finds
The African continent could generate nearly a quarter of its energy needs from renewable sources by 2030, according to a report
Solar PV minigrids serving 30 villages in Mali
by the International Renewable Energy Agency
(IRENA). The report identified potential renewable energy sources — including solar, biomass, hydropower, and wind resources — equivalent to more than 375 million tons of coal. While half of energy use in Africa today involves traditional biomass consumption, the report estimated that a shift to renewable-energy cooking solutions would reduce traditional cook stove usage and the resulting health complications from poor indoor air quality, leading to savings of $20 to 30 billion annually by 2030. In the African power sector, the share of renewable sources could increase to 50 percent by 2030, reducing carbon dioxide emissions by more than 340 million tons, the IRENA report says.
02 Oct 2015:
Brown Carbon Plays Larger Role
In Climate Than Assumed, Study Says
Climate models are underestimating the effects of so-called brown carbon from sources such as forest fires because the models
do not account for regional factors — such as areas where wood-burning stoves are common — when estimating brown carbon's climate-warming impacts. Black carbon, primarily from urban combustion sources like vehicles and factories, absorbs the most sunlight, the researchers explain, and it's well-accounted for in climate models. However, most models don't properly account for brown carbon, the researchers say. Brown carbon "can be a significant absorber of sunlight, making it as bad for climate warming as black carbon," said co-author Manvendra Dubey of Los Alamos National Laboratory. The study, published this week in Nature Communications
, stresses the differing effects of black and brown carbon on the climate: Solid wood combustion, a source of brown carbon soot, is pervasive during United Kingdom winters, but very uncommon in other study locations, such as Los Angeles, which generally sees more black carbon soot from vehicles.
29 Sep 2015:
Electric Buses Could Lead to
Significant Savings Even for Smaller Cities
Electric buses could save a city with half a million residents — one similar in size to Sacramento, California — roughly $12 million each
Electric bus, Bonn, Germany
year if the city's buses were to run on electricity rather than diesel fuel, according to a study
by the Volvo Group and the audit and advisory firm KPMG. Factors such as noise, travel time, emissions, energy use, natural resource use, and roughly $2.9 million in avoided health care costs contributed to the annual savings, the analysis says. Gothenburg, Sweden's second-largest city, recently began operating a new electric bus line built by Volvo and powered by wind and hydro electricity, says Niklas Gustafsson, Volvo's head of sustainability. The buses' environmentally friendly design, combined with the fact that they are completely silent and emissions-free, has made the line popular in Gothenburg, he says.
28 Sep 2015:
Shell Ends Arctic Oil and Gas
Exploration Bid for Foreseeable Future
Shell Oil has announced
that it will stop its controversial exploratory drilling for oil and gas in Arctic waters for the foreseeable
Shell's Polar Pioneer rig as it left Seattle for the Arctic
future, saying in a statement that the reserves it had discovered were not “sufficient to warrant further exploration.” Shell began operating its first exploration well on July 30, 2015, in the Chukchi Sea off the northwestern coast of Alaska. But the company reported that although it had found indications of the presence of oil and gas, the reserves in the basin where they were drilling were, in the words of one company official, "clearly disappointing." Under Shell's federally approved exploration plan, all rigs and support vessels must leave the Chukchi Sea before the end of October. Environmental groups hailed Shell's announcement.
23 Sep 2015:
New and Reactivated Coal
Mines Fell to Lowest Levels Ever Recorded
The opening of fewer new coal mines, combined with the closing of less-efficient mines, led to 2013 having the lowest number of active coal mines in the U.S. on record, according to an analysis
by the Energy Information Administration. In addition, the number of new and reactivated coal mines that began production in 2013 reached its lowest level in at least the past 10 years, the analysis says. Although 103 mines were added that year (the most recent year for which complete data are available), 271 mines were idled or closed, amounting to a 14-percent decline in the total number of productive coal mines compared to the previous year. The 2013 total was 397 fewer coal mines than in 2008, when U.S. coal production peaked. The declining number of new mines reflects reduced investment in the coal industry, strong competition from natural gas, stagnant electricity demand, a weak coal export market, and regulatory and permitting challenges, the EIA says.
Interview: A Scientist’s View
On How to Repair the Planet
For an environmental scientist who studies how humanity is pushing the earth close to potentially disastrous tipping points, Johan Rockström
of a new book, Big World, Small Planet
— is surprisingly optimistic. Although he reckons that our species has crossed four of nine “planetary boundaries,” including those on climate change and deforestation, he believes there is still time to pull back from the brink and create a sustainable future based on renewable energy and a “circular” economy that continually reuses resources. In an interview with Yale Environment 360
, Rockström describes how an alignment of science, technological advances, and a growing public hunger for action can get civilization back on track. “It’s not a journey where we are backing into the caves,” says Rockström. “It’s a journey of high technology ... and huge, multiple benefits.”
Read the interview.