25 Jul 2016:
Global Economy Has Reduced
Its Energy Intensity By One-Third Since 1990
The global economy is becoming less energy intensive
, using fewer fossil fuels to power productivity and economic growth, according to new data from the U.S. Department of Energy.
Rooftop solar panels
Global energy intensity — a measure of energy consumption per unit of gross domestic product (GDP) — has decreased nearly one-third since 1990, the agency said. The U.S., for example, burned 5,900 British thermal units per dollar of GDP
in 2015, compared to 6,600 BTUs in 2010. China burned 7,200 BTUs per dollar in 2015 versus 8,300 BTUs in 2010. The Department of Energy says the decrease is the result of the growth in low-carbon energy sources, such as wind and solar, and improved energy efficiency. “This is excellent news,” Penn State University climatologist Michael Mann told Climate Central
. “The dramatic drop we are seeing in global energy intensity is a direct indication that energy efficiency measures are having a very direct impact on global carbon emissions.”
20 Jul 2016:
Global Temperatures Continue
To Shatter Heat and Arctic Ice Records
June marked the 14th consecutive month of record-breaking heat, with global temperatures measuring 1.62 degrees F above the 20th-century average, NASA and the National Oceanic and Atmospheric Administration announced this week
Global 2016 temperatures.
The first half of 2016 was 1.89 degrees F above last century’s average, breaking the previous January-June record set in 2015 of 0.36 degrees F above average. “2016 has really blown  out of the water,” Gavin Schmidt, director of NASA's Goddard Institute for Space Studies, told reporters
. Five of the first six months of this year have also set records for the smallest Arctic sea ice extent since satellite records began in 1979. Scientists said the recent record-breaking heat could be partly attributed to last year’s strong El Nino, but not entirely. “While the El Niño event… this winter gave a boost to global temperatures from October onwards, it is the underlying trend which is producing these record numbers,” Schmidt said
12 Jul 2016:
Climate Change Has Shifted
The World’s Cloud Cover Over Past 30 Years
Warming global temperatures have altered the distribution of clouds across the Earth in recent decades, according to new research published in the journal Nature
Global cloud cover.
Mid-latitude storm clouds have shifted polewards, dry subtropical zones have expanded in size, and the tops of clouds have gotten higher as a result of a warmer troposphere and cooler stratosphere, according to the study, which relied on satellite images taken between 1983 and 2009. Researchers said these shifts in cloud cover could further exacerbate climate change. As cloud systems shift toward the poles, where there’s less solar radiation, more sunlight will reach the Earth’s surface near the equator, boosting temperatures. Also, taller, thicker clouds trap more heat. “We now have a thicker blanket, which is also a warming effect,” said Joel Norris
, a climate scientist at the Scripps Institution of Oceanography in San Diego who helped lead the study.
08 Jul 2016:
Hundreds of Deaths in 2003
Heat Wave Linked to Climate Change
A new study suggests that human-caused climate change could be responsible for a significant portion of the 70,000 deaths that occurred during the record-breaking 2003 European heat wave. The research, published in the journal Environmental Research Letters
, combined climate modeling with health data for hundreds of fatalities that summer. Climate change, the study found, increased the likelihood of heat-related losses by nearly 70 percent in Paris and 20 percent in London. Out of 735 heat-related deaths in Paris, 506 were attributable to global warming, as were 64 out of 315 deaths in London. "Until recently, whenever we talked about climate change we talked about the globally averaged increase in temperature of 1 degree and people just don't really know or frankly care about that," lead study author and Oxford University scientist Daniel Mitchell told InsideClimate News
. "But now… people can really start to understand that these are impacts we're seeing now, not in the future."
05 Jul 2016:
Paris Bans All Pre-1997
Cars During Weekdays to Fight Pollution
Starting this month, Paris is banning all cars built before 1997 from driving within city limits Monday through Friday in an effort to lower air pollution levels.
Commuter traffic in Paris.
Paris has been struggling with smog for years and its pollution levels have briefly topped those in Beijing. Similar to Mexico City and New Delhi
, Paris banned even- and odd-numbered license plates on alternating days to fight smog earlier this year. It has also championed cleaner transit options, such as bike- and electric car-sharing programs. Not everyone is enthused, however: The French consumer group 40 Million Drivers said the ban could impact up to 500,000 vehicle owners in and around Paris, particularly low-income families. "When you have an old car in France, it's because you don't have the money to buy a new one," Pierre Chasseray, the executive director of 40 Million Drivers, told NPR
. "Public transport is a solution, but it's not the solution for everybody."
24 Jun 2016:
Cities on Six Continents
Join Forces to Combat Climate Change
Mayors from more than 7,100 cities on six continents announced this week
that they are creating a new alliance to fight climate change at the local level.
New York City
The new group — a merger of the European Union-based Covenant of Mayors and the United Nations-backed Compact of Mayors — represents a combined 600 million people in 119 countries. The initiative aims to set city-based CO2 emissions cuts, build sustainable communities, and foster the sharing of resiliency policies and technologies. “Cities are key to solving the climate change challenge,” former New York Mayor Michael Bloomberg and Maroš Šefčovič, vice-president of the European Commission, wrote in The Guardian
. “They account for most of the world’s carbon emissions, and mayors often have control over the largest sources. Cities can also act quickly to confront climate change, without the political and bureaucratic hurdles that often hold back national governments.”
23 Jun 2016:
Scientists Discover Contagious
Cancer in More Species of Shellfish
Last year, scientists discovered a type of contagious cancer in soft-shell clams in which free-floating cells transmitted the disease from one animal to another.
Now, a team of Columbia University researchers is reporting that contagious cancers in the ocean may be more common than previously thought
and can not only jump from animal to animal, but across species. According to the new study published in Nature, the leukemia-like cancer, known as disseminated neoplasia, has been found in three more species of bivalves: mussels, cockles, and golden carpet shell clams. The cancer cells were genetically distinct from their hosts, indicating they originated elsewhere. Transmissible cancer had previously been found in Tasmanian devils
and dogs, but there’s no indication that humans are at risk. “I would only worry deeply if I was a mollusk,” Stephen P. Goff, a molecular biologist at Columbia University and co-author of the study, told The New York Times
16 Jun 2016:
Some Coral Reef “Bright Spots”
Remain, Despite Devastating Bleaching
After decades of being overfished and mismanaged, and the worst bleaching event on record this year, scientists reported in the journal Nature this week
that there remain some “bright spots” among the world’s coral reefs
Coral reef on the Palmyra Atoll in the Pacific.
– systems that are doing better than anyone expected. The study examined 18 different factors at 2,514 reefs in 46 nations, including water depth, tourism, fishing, and population density. Those systems that were still thriving — defined by the scientists as having more fish than expected — tended to be managed by, and accessible only to, local fishermen and indigenous groups. This included reefs in places like the Solomon Islands, parts of Indonesia, Papua New Guinea, and Kiribati. “There’s been a narrative about local involvement, but it’s often very token,” Joshua Cinner, a research fellow at James Cook University in Australia and lead author of the study, told The Atlantic
. He said there should be more opportunity for “communities to creatively confront their own challenges.”
15 Jun 2016:
Clean Energy Could Cost Up To
59 Percent Less by 2025, Report Finds
The cost of solar energy could drop by as much as 59 percent by 2025, from 13 cents to 6 cents per kilowatt hour, according to a new report from the International Renewable Energy Agency
Rooftop solar panels in Hannover, Germany.
Offshore wind could become 35 percent cheaper, and onshore wind 26 percent cheaper, by 2025. The cost of building renewable energy facilities is also likely to fall, by as much as 57 percent by the middle of next decade, the report found. “Historically, cost has been cited as one of the primary barriers to switching from fossil-based energy sources to renewable energy sources, but the narrative has now changed,” Adnan Z. Amin, director-general of IRENA, said in a statement
. “To continue driving the energy transition, we must now shift policy focus to support areas that will result in even greater cost declines and thus maximize the tremendous economic opportunity at hand.”
10 Jun 2016:
Researchers Find a Way to Turn
CO2 Into Rock at Iceland Power Plant
Scientists have discovered a new way to successfully capture carbon dioxide and transform it into rock deep underground. The experiment, published in this week’s Science
Section of rock made from mixing CO2 and water.
was conducted at the Hellisheidi power plant in Iceland, the world’s largest geothermal facility. When the plant — which helps power Iceland’s capital, Revkjavik — pumps up volcanically heated water to turbines, gases like carbon dioxide and hydrogen sulfide often come up as well. A team of U.S. and European researchers, led by Columbia University's Lamont-Doherty Earth Observatory, captured the CO2, mixed it with the used volcanic water, and re-injected it into basalt rocks up to a half-mile underground. More than 95 percent of the mixture naturally solidified into carbonate minerals in less than two years. Previous estimates predicted that the process could take hundreds, if not thousands, of years.
09 Jun 2016:
Fish Can Recognize Human
Faces, According to One New Study
Fish now join humans, monkeys, primates, and birds as one of the few animals able to distinguish faces, according to new research published in the journal Scientific Reports
James St. John/Wikimedia
The skill requires a sophisticated combination of perception and memory
— and generally, a neocortex. But scientists at the University of Oxford in England and the University of Queensland in Australia were able to train archerfish to recognize human faces, despite the fact that these tropical fish don’t have complex brain structures. Archerfish typically feed by spitting water at prey, like insects. So the scientists taught the fish to spray water at images of particular human faces in exchange for food. Archerfish identified the correct person 81 percent of the time.
06 Jun 2016:
Fish Choose Plastic Over
Zooplankton in Polluted Waters
Fish that grow up in waters full of plastic particles develop a taste for trash, choosing to eat plastic over zooplankton, their natural food source, according to a study published in the journal Science
The research, by ecologists at Uppsala University in Swedish, found larval perch from the Baltic Sea exposed to microplastic pollution (less than 5mm in size) had stunted growth, were less active, ignored the smell of predators, and experienced increased mortality rates. Plastic pollution has become a major problem in the world’s oceans, but scientists are just beginning to understand how these fragments can affect the health of marine species. “If early life-history stages of other species are similarly affected by microplastics, and this translates to increased mortality rates, the effects on aquatic ecosystems could be profound,” said ecologist Oona Lönnstedt
, lead author of the study.
01 Jun 2016:
Climate Change Could Be Making
Food Crops More Toxic, UN Report Says
As extreme weather increases in frequency and intensity, food crops are producing more chemical compounds that can be toxic to humans in large doses, according to a recent report by the United Nations Environment Programme
Crops such as wheat, maize, and soybeans generate these compounds as a natural response to environmental stressors, such as drought, floods or heat waves. But when consumed by humans for extended periods of time, they can cause illnesses like neurological diseases or cancer, according to the study. One example, the Thomson Reuters Foundation reports
, is nitrate. Drought slows down plants’ conversion of nitrates into amino acids and proteins, leading to a build up of the compound. When consumed in large quantities, nitrates stop red blood cells from transporting oxygen in the human body. "We are just beginning to recognize the magnitude of toxin- related issues confronting farmers in developing countries of the tropics and sub-tropics," the UNEP report noted.
31 May 2016:
Bees’ Fuzzy Bodies Help Them
Detect Electrical Charges From Flowers
Back in 2013, scientists discovered that bees can detect the electrical charges that flowers emit, helping them locate nearby food sources.
Exactly how the bees were doing this, however, remained a mystery. Now, scientists have found that the hairs on bees’ fuzzy bodies move in response to the charges
, which send nerve signals to bees’ brains that flowers are nearby. The finding is an important one: Scientists have long thought
that only animals in marine or moist habitats could detect electric fields, since currents are carried through water. That bees can do this in dry air opens up the possibility that other insects might have the same ability. The research, conducted by scientists at the University of Bristol in the U.K., was published this week in the journal Proceedings of the National Academy of Sciences
27 May 2016:
Poland Begins Logging
Ancient Forest Despite Fierce Protests
Despite intense protests from environmentalists and scientists, Poland began logging the Bialowieza Forest this week, the last remaining fragment of Europe’s ancient woodlands and a World Heritage site.
The forest, covering more than 350,000 acres, is home to the continent’s largest population of European bison and 20,000 other wildlife species. Polish officials said the logging is to remove spruce trees dead or dying from a bark beetle infestation, but green groups argue that half the trees marked for removal aren’t spruce. Environmentalists have been patrolling the forest to keep track of logging activity, and they filed a formal complaint last month with the European Commission to intervene “before the Polish government allows for the irreversible destruction of the Bialowieza forest,” Greenpeace Poland activist Katarzyna Jagiełło recently told The Guardian
23 May 2016:
World Could Warm 8 Degrees
Celsius If All Fossil Fuel Reserves Burned
As nations meet in Bonn, Germany this week to hash out how to achieve the 2-degree Celsius goal they set in Paris, new research is providing policymakers a glimpse of what would happen if the world does nothing to curb climate change.
What if nations chose instead to burn through all of their remaining fossil fuel reserves, equal to 5 trillion tons of CO2 emissions? According to the new study published in the journal Nature Climate Change
, the world would warm an average 8 degrees Celsius (14.4 degrees F), or up to 17 degrees Celsius (30 degrees F) in the Arctic. The research was conducted by a team of climate scientists at the University of Victoria and Simon Fraser University in British Columbia who wanted to understand the worst-case scenario. “Such climate changes, if realized, would have extremely profound impacts on ecosystems, human health, agriculture, economies, and other sectors,” the researchers write.
Interview: CO2 'Air Capture' Could
Be Key to Slowing Global Warming
For two decades, Klaus Lackner has pioneered efforts to combat climate change by pulling carbon dioxide from the atmosphere.
Now, after years of watching the global community fail to bring greenhouse gas emissions under control, Lackner — director of the Center for Negative Carbon Emissions at Arizona State University — is delivering a blunt message: The best hope to avoid major disruptions from global warming is to launch a massive program of CO2 "air capture" that will begin to reverse the buildup of billions of tons of carbon in our atmosphere. "We need to have the ability to walk this backwards," says Lackner. "I'm saying this is a war, and we need to use all the weapons at our disposal. You don't want to get into this fight with one hand tied behind your back."
Read the interview.
18 May 2016:
Trees Sleep, With Branches And
Leaves Drooping at Night, New Study Says
Scientists have long known that plants have a day-to-night cycle. Some trees close their leaves in the evening. Most flowers open up their petals in the morning.
But these observations have largely been made only in experiments with potted plants. Now, a team of scientists has used a laser scanner to measure trees’ daily cycles in the wild, and they’ve discovered that trees sleep. “Our results show that the whole tree droops during night, which can be seen as position change in leaves and branches,” Eetu Puttonen, a scientist at the Finnish Geospatial Research Institute and lead author of the new study, said in a statement
. Silver birch leaves drooped to their lowest point a couple of hours before sunrise and became upright again a few hours later. It isn’t yet clear whether the sun or the plants’ internal rhythm spurs the movement. The findings were recently published in the journal Frontiers in Plant Science
17 May 2016:
Norwegian Company Building
The World’s Largest Floating Wind Farm
Scotland is about to get the world’s largest floating wind farm, with five 6-megawatt turbines bobbing 15 miles offshore in the North Sea.
The project—which is being developed by Statoil, a Norwegian energy company—marks a shift in offshore wind technology. Most ocean-based turbines to date have been rooted to the sea floor by concrete and steel foundations, similar to oil and gas rigs. But this design limits the projects to shallower waters. Statoil’s floating turbines, known at Hywind, consist of a steel cylinder filled with ballast water and stones, and are tethered to the sea floor by a series of cables. The company, which was granted a lease to build the wind farm this week
, will install the Scotland project in water more than 300 feet deep. The plan is for the wind farm to start generating electricity by the end of 2017.
16 May 2016:
Fumes from Farms Are
Top Source of Fine-Particle Pollution
Farms are the number one source of fine-particulate air pollution in the U.S., Europe, Russia, and China, according to new research published in the journal Geophysical Research Letters
Gases from fertilizers and livestock waste cling to emissions from cars, power plants, and factories to create solid particles less than 1/30th the width of human hair. Particles this size have been shown to penetrate deep into lungs, and cause an estimated 3.3 million deaths each year from illnesses like heart and pulmonary disease. Global climate action, however, could reduce this type of air pollution in the coming decades, says the new study, done by three Columbia University scientists. Cutbacks in energy consumption would mean that fumes from farms would have fewer emissions to which they could bond. This reduction in particulates would happen even if fertilizer use increases, the research says.
12 May 2016:
Despite Push for Renewables,
Fossil Fuels Likely to Dominate in 2040
World leaders pledged last year in Paris to cut CO2 emissions and limit global warming to 2 degrees Celsius. Despite these promises, U.S. analysts said Wednesday
that fossil fuels
— including coal — will still likely be the world’s primary source of energy in 2040. The findings are part of the U.S. Energy Information Administration’s annual World Energy Outlook report. Electricity from wind, solar, and hydropower will grow 2.9 percent annually, the report concluded, and by 2040, renewables, coal, and natural gas will each generate one-third of the world’s electricity. But diesel and gasoline will still power the majority of vehicles, with electric cars making up only 1 percent of the market, the report said. The report also found that carbon emissions from energy consumption in the developing world could grow 51 percent from 2012 to 2040
as countries like India and China modernize their economies, particularly by using coal.
10 May 2016:
More than 2,000 New
Plant Species Are Found Every Year
There are currently 391,000 plant species known to science—and another 2,000 are being discovered every year, according to a new report from the U.K.’s Royal Botanic Gardens, Kew.
Last year’s new discoveries included a nearly five-foot tall carnivorous plant first identified on Facebook, a 105-ton tree in West Africa, and 90 new species of Begonia flowers. Brazil, Australia, and China were hotspots for species discovery. The State of the World’s Plants
report did find, however, that one-fifth of the world’s plant species are at risk of extinction from habitat loss, disease, invasive species, and climate change. “Plants are absolutely fundamental to humankind,” Kathy Willis, director of science at Kew, told The Guardian
. “Plants provide us with everything — food, fuel, medicines, timber, and they are incredibly important for our climate regulation. We are facing some devastating realities if we do not take stock and re-examine our priorities and efforts.”
05 May 2016:
With Climate Change, It Is
Survival of the Oldest, Not the Fittest
When it comes to climate change, the world’s oldest species are more likely to survive than newly evolved ones, says a new study
published in the journal BMC Evolutionary Biology
The logic is relatively simple: The reason they’re so old is that they’ve been tested by abrupt environmental shifts before and have come out on top. This group includes species like the cane toad and California sea lion. More specifically, the study found the planet’s oldest animals all share at least one of the following characteristics: They come in various colors, give birth to live young (as opposed to eggs), and live at low latitudes. The research could help “predict which [species] could be better able to deal with current climate change and to better predict the threat status of species on the red list of the International Union for Conservation of Nature,” said
Sylvain Dubey, an ecologist at the University of Lausanne in Switzerland and co-author of the new study.
28 Apr 2016:
Half of All Farmed Fish Have
Deformed Ear Bones That Cause Hearing Loss
Farmed fish have become an increasingly larger share of the world’s seafood market in recent decades—now accounting for 50 percent of global seafood consumption.
At the same time, however, debate about the ethics, safety and health of farmed fish versus their wild counterparts has also intensified. A new study
published in the journal Nature Scientific Reports
finds that half of all farmed Atlantic salmon have deformed ear bones that lead to hearing loss. These salmon are 10 times more likely to have the deformity than wild fish. The findings “raise questions about the welfare of farmed animals," said
Tim Dempster, a biologist at the University of Melbourne involved in the study. It may also explain why efforts to boost wild populations by releasing farmed juveniles have proven unsuccessful. Hearing loss would prevent farmed fish from detecting predators, or restrict their ability to navigate to breeding sites, the scientists said.
27 Apr 2016:
Wooden Skypscrapers Grow in
Popularity in Effort to Reduce Emissions
Architects are increasingly abandoning traditional steel-and-cement skyscrapers in favor of wood-and-glue designs — a move that experts say could help drastically reduce CO2 emissions from the world’s building sector.
Acton Ostry Architects
Creating steel, iron, and non-metallic minerals — including concrete — is an energy-intensive process that accounts for more than 10 percent of global greenhouse gas emissions. In the 1990s, developers created a product known as cross-laminated timber — planks of wood glued together by a polyurethane adhesive — with the strength and durability of traditional building materials, and far fewer CO2 emissions. With concern for climate change mounting, wood-based skyscrapers have been popping up around the globe in recent years
. The University of British Columbia, for example, approved an 18-story, wooden housing complex in 2015. “This revolution has happened rather quietly and happened rather slow,” Kris Spickler, a heavy timber specialist at Structurlam, told Popular Science
. “But I think we’re in a year right now where we’re going to see it explode.”
26 Apr 2016:
Historical Citizen-Scientists’ Ice
Records Confirm Global Temperature Rise
Centuries-old records from Japanese priests and European shipping merchants are helping scientists confirm that the earth has warmed substantially — and freshwater ice formation significantly decreased — since the Industrial Revolution.
These early record keepers tracked annual freeze dates and the breakup of ice each spring on lakes and rivers for hundreds of years, beginning in the 1440s in Japan and 1690s in Finland. The data represents the oldest known inland ice records. An international team of scientists published a study this week in Nature Scientific Reports
examining how ice behavior changed over the records’ years. They found that from 1443 to 1683, for example, the annual freeze date of Lake Suwa in Japan moved back 0.19 days per decade. From the start of the Industrial Revolution, however, that trend grew 24 times faster, pushing back the date of ice formation on the lake by 4.6 days per decade.
20 Apr 2016:
Entries Invited for Third
Annual Yale Environment 360 Video Contest
The third annual Yale Environment 360
Video Contest is now accepting entries. The contest honors the year's best environmental videos. Submissions must focus on an environmental issue or theme, have not been widely viewed online, and be 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, and two runners-up will each receive $500. The 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. Deadline for entries is June 10, 2016. Read More.
19 Apr 2016:
Thirty Years After Chernobyl,
Wildlife Thrives in the Contaminated Zone
Thirty years after the meltdown of the Chernobyl Nuclear Power Plant in Ukraine, humans remain relatively scarce near the accident site.
Jim Beasley/Sarah Webster
A gray wolf is caught on camera near Chernobyl.
Wildlife, however, is thriving, according to a recent study
by scientists at the University of Georgia. The researchers set up cameras at 94 sites in the Chernobyl Exclusion Zone—a 1,000-square-mile area where radiation levels remain high—and applied a fatty acid scent to attract animals. In total, they saw 14 mammal species in the footage, most frequently gray wolves, boars, red fox, and raccoon dogs. Since carnivores tend to accumulate radiation faster that animals further down the food chain, finding so many of them was good news. "We didn't find any evidence to support the idea that populations are suppressed in highly contaminated areas,” said
James Beasley, an ecologist at the University of Georgia who helped lead the study.
18 Apr 2016:
The Complicated Case of
Global Warming’s Impact on Agriculture
Scientists have long debated whether climate change could help or hurt the world’s agricultural systems. Theoretically, additional CO2 in the atmosphere should help fuel crop growth.
A farmer plows his fields in southern India.
But global warming’s other impacts, such as shifting rain patterns, higher temperatures, and extreme weather, could reduce crop yields. A new study in the journal Nature Climate Change
by researchers in a half-dozen countries finds the answer depends on where you live. The scientists found yields of rain-fed wheat could increase by 10 percent, while irrigated wheat, the bulk of India and China’s production, could decline by 4 percent. Maize will decrease almost everywhere, down 8.5 percent. Rice and soybean could flourish in some areas and falter in others. “Most of the discussion around climate impacts focuses only on changes in temperature and precipitation,” said
Delphine Deryng, an environmental scientist at Columbia University who led the study. “To adapt adequately, we need to understand all the factors involved.”
12 Apr 2016:
Scientists Reimagine The
Tree of Life With New Microbe Knowledge
Following years of intense exploration and research into the microbial world, scientists have reimagined the tree of life
—the iconic visual representation of the living world first proposed by Charles Darwin in 1859.
The new tree of life.
The project was led by researchers at the University of California, Berkeley, who over the last decade have been gathering DNA from across the globe—from everywhere from meadow soils and river mud to deep sea vents—to reconstruct genomes and describe thousands of new microbial species. Curious how their findings fit into the tree of life, the scientists used a supercomputer
to visualize how more than 3,000 new and known species related to one another. They discovered that eukaryotes, the group that includes humans, exist on a thin twig compared to the microbial branch of the tree. “The tree of life as we know it has dramatically expanded due to new genomic sampling of previously enigmatic or unknown microbial lineages,” the authors wrote