25 May 2016:
Could This Straddling Bus Help
Solve China’s Air Pollution Problem?
With an estimated 20 million new drivers on the road each year, China has long struggled to control its CO2 emissions, air pollution, and traffic problems.
But a Beijing-based transit company is planning to test a new straddling bus this summer
that could provide some relief, according to Chinese news agency Xinhua. The bus, which can carry up to 1,400 passengers, hovers above the road, letting smaller vehicles pass underneath. Because it operates on existing roadways, the system is much cheaper to build than underground subways, while carrying the same number of people. The idea of a straddling bus has been around since 1969
, but has remained a far-fetched concept until recent years. A model of the system, designed by Transit Explore Bus, was unveiled at the International High-Tech Expo in Beijing this month. The company plans to build and test an actual straddling bus in Changzhou this summer.
Bringing Energy Upgrades
To the Nation’s Inner Cities
America’s low-income urban areas are filled with aging buildings that are notoriously energy-inefficient. It’s a problem that Donnel Baird sees as an opportunity. Baird is CEO and cofounder of BlocPower,
a startup that markets and finances energy-upgrade projects in financially underserved areas. Founded in 2013 with venture capital seed money, BlocPower bundles small energy-improvement projects together — from barber shops to churches —and sells them to potential investors. In an interview with Yale Environment 360
, Baird describes how BlocPower’s projects not only create jobs and reduce carbon emissions, but also raise awareness of global warming in inner-city communities. “It is not possible for the climate change movement to win anything significant without the participation of people of color,” says Baird.
Read the interview.
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.
21 Apr 2016:
A Town Made Almost Entirely Out
Of Plastic Bottles is Being Built in Panama
Construction has begun on the world’s first town made almost entirely out of recycled plastic bottles. Located on Isla Colón in Panama, the village will consist of 120 houses and a lodge on 83 acres of tropical jungle.
The first two-bedroom home was built late last year, and is made from 10,000 plastic bottles pulled from Panama trashcans, roadsides, and beaches. The walls of the homes consist of steel cages filled with bottles and then encased in a concrete mix. They are flexible enough to withstand an earthquake, and insulating enough to keep the home up to 17 degrees F cooler than the jungle outside. Because there are so many recycled bottles on the island already, homes can be built quickly and cheaply, said Robert Bezeau, founder of the Plastic Bottle Village. “We are changing the world, without changing the Earth, one home at a time,” he says on the project’s website
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.
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.”
07 Mar 2016:
Climate Change Will Threaten Key Crops Across Sub-Saharan Africa
Climate change’s rising temperatures and more frequent and intense droughts could leave parts of sub-Saharan Africa unable to grow staple crops such as maize, bananas, and beans by the end of the century,
A woman holds maize, a staple crop, in Ghana.
according to new research
published Monday in the journal Nature Climate Change. Up to 60 percent of bean-producing areas and 30 percent of maize and banana farms could become unviable by 2100, and farmers should start growing more climate change-resistant crops, improve irrigation systems, or switch to raising livestock, the scientists said. “Agriculture and farming are critical not only for the livelihoods of farmers but also more broadly for the diets of the region’s population,” said
Julián Ramírez-Villegas, a scientist at the International Center for Tropical Agriculture and lead author of the study. “Unless timely adaptation actions are taken, we’re looking at a bleak picture in terms of food security and poverty throughout many areas of sub-Saharan Africa.”
03 Mar 2016:
Oregon To Eliminate Coal
From Its State Energy Mix by 2030
Oregon has become the first U.S. state to eliminate the use of coal by legislative action. Lawmakers at the statehouse
Oregon's only remaining coal plant, in Boardman
voted Wednesday to eliminate coal from the state’s energy supply by 2030, and to provide half of all customers’ power with renewable sources by 2040. The legislation was hammered out between the state’s two largest utilities and environmental groups. Clean energy groups praised the legislation as one of the strongest pieces of pro-climate legislation in the U.S. in years. “In terms of the coal phase-out, this really is precedent setting,” said Jeff Deyette
, senior energy analyst at the Union of Concerned Scientists. There is only one coal plant currency operating in Oregon, and it is the state's largest single source of greenhouse gas emissions.
19 Feb 2016:
Growing Marijuana Consumes
Huge Amount of Energy, New Report Finds
The booming legal marijuana industry in the U.S. uses enough electricity to power 1.7 million homes with a staggering price tag of $6 billion every year, according to a new report
by the data analysis firm New Frontier.
Cannabis Training University
Growing cannabis requires huge amounts of energy
“Marijuana is the most energy-intensive agricultural commodity that we produce,” said John Kagia
, director of industry analytics for New Frontier, which specializes in cannabis industry research. “That’s largely because of the very high energy costs associated with its cultivation and production indoors.” The report adds to mounting concerns over marijuana’s massive ecological footprint
. Authors of the report said simple steps like switching to outdoor or greenhouse cultivation, installing more efficient lighting and monitoring energy use could significantly reduce the industry’s energy footprint.
15 Feb 2016:
Global Water Shortages Affect
At Least Four Billion People, Study Says
Global water shortages are far worse than previously thought, with at least two-thirds of the world’s population — four billion people — living with severe water scarcity for at least one month every year, according to new research published in the journal Science Advances
. “If you look at environmental problems, [water scarcity] is certainly the top problem,” said Prof Arjen Hoekstra
of the University of Twente in the Netherlands, who led the study. The new research also revealed that 500 million people live in places where water consumption was twice the amount replenished by rain. Hoekstra said that many areas are living on borrowed time, such as Yemen, Pakistan, Iran, Mexico, and Saudi Arabia. Other areas of particular concern include large swaths of Australia and the American Great Plains, which are dependent on the diminishing Ogallala aquifer. These water problems are exacerbated by population growth and raising meat for consumption, which is highly water-intensive, according to the study.
02 Feb 2016:
General Electric Joins
The Move From CFL Bulbs to LEDs
General Electric, a leader in the lighting market, has announced that it will stop manufacturing compact fluorescent light (CFL) bulbs by the end of the year and
increasingly shift production to LED
(light emitting diode) bulbs, which last longer, produce a better-quality light, and are rapidly declining in price. The move highlights a trend away from CFL bulbs, which several years ago were the go-to choice for energy-saving bulbs to replace energy-intensive incandescent light bulbs. “Now is the right time to transition from CFL to LED,” said GE lighting executive John Strainic. The price of an LED bulb has fallen from $30 to $5 in recent years and continues to decline. Retail giant Ikea abandoned CFL bulbs last year and now sells only LED lights, and other major retailers like Walmart are expected to follow suit — a move welcomed by environmental groups, which laud the large energy savings from LEDs.
11 Jan 2016:
Scientists Warn of Biodiversity
Impacts of Major Hydropower Projects
Hydropower is considered by many to be a key ingredient to reducing carbon emissions and meeting global climate goals,
The Belo Monte dam under construction in the Amazon
but it comes at a great cost to biodiversity, particularly in tropical rainforests, according to a new report
published in the journal Science
. “Far too often in developing tropical countries, major hydropower projects have been approved and their construction begun before any serious assessments of environmental and socioeconomic impacts had been conducted,” says the report's lead author Kirk Winemiller, an aquatic ecologist at Texas A&M University. The dam-building rush, with more than 450 dams planned for the Amazon, Congo, and Mekong river basins alone, impedes tropical fish migration and vastly expands deforestation due to road construction, according to the authors. Other concerns include development of previously inaccessible terrain, as well as methane emissions from newly built reservoirs.
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.
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.
19 Oct 2015:
Oslo, Norway, to Ban
Cars in Its City Center By 2019
Oslo, Norway, will ban cars
from its city center by 2019, becoming the first European capital to adopt a
Bikes line the streets of central Oslo, Norway.
permanent prohibition on cars in its downtown area. The newly elected city council announced that the city would also build at least 60 kilometers (37 miles) of new bike lanes by 2019 and provide a “massive boost” of investment in public transportation. Business owners in central Oslo fear that the car ban will reduce revenues, but leaders of the new council said the ban could even increase visitors to downtown and that the city would take steps to reduce negative impacts, including allowing vehicles to transport goods to stores and conducting trial runs of the ban to work out problems. Oslo, with 600,000 inhabitants and almost 350,000 cars, would be the first major European city with a permanent central car ban.
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.
In Brazil, A City’s Waste Pickers
Find Hope in a Pioneering Program
The millions of impoverished people who sift through trash and landfills for recyclable materials have been called the world’s “invisible environmentalists.” Yet many work in deplorable conditions and face exploitation from unscrupulous middlemen. In
A waste picker works at a warehouse in Curitiba.
Curitiba, Brazil, city officials and social activists have launched a rapidly growing program in which the waste pickers work out of city-sponsored warehouses and use their collective power to bargain for fair prices for their recycled goods. The Curitiba initiative is one of a growing number worldwide that seek to provide better working conditions and higher wages for waste pickers, while also aiding recycling and creating cleaner cities. Read more.
09 Oct 2015:
‘Land Grabbing’ Is Accelerating
As Pressure on Agriculture Resources Grows
An area about the size of Japan — roughly 140,000 square miles — has been purchased or
A land-grabbing operation in Uganda
leased by foreign entities for agricultural use during the last 15 years, according to a report
by the Worldwatch Institute. An additional 58,000 square miles are under negotiation, the report found. “Land grabbing,” a term for the purchase or lease of agricultural land by foreign interests, has emerged as a threat to food security in several nations. Globally, over half of this land is in Africa, especially in water-rich countries like the Congo. The largest area acquired in a single country is in Papua New Guinea, with nearly 15,500 square miles (over 8 percent of the nation’s total land cover) sold or leased to foreign entities. Foreign purchase of land in developing countries has surged since 2005 in response to rising food prices and growing biofuel demand in the U.S. and the European Union, as well as droughts in the U.S., Argentina, and Australia. “Essentially no additional suitable [agricultural] land remains in a belt around much of the middle of the planet,” writes Gary Gardner, a contributing author to the report.
06 Oct 2015:
Styrofoam May Be Biodegradable
After All, Thanks to Mealworms, Study Says
Mealworms can survive on a diet of polystyrene plastics — commonly used to make Styrofoam — according to research published in
Mealworms devouring Styrofoam
the journal Environmental Science and Technology
. The findings point toward a possible solution for dealing with one of the most-polluting forms of plastic. In the study, 100 mealworms consumed between 34 and 39 milligrams of Styrofoam per day. These worms were as healthy as those fed a normal diet, the researchers report, and excreted biodegraded Styrofoam fragments that were usable as agricultural soil. While studies have found that other organisms, including waxworms and Indian mealmoth larvae, are able to digest plastics such as polyethylene, this is the first organism able to digest Styrofoam, which is generally considered non-biodegradable. The discovery could aid in better understanding of the conditions and enzymes that contribute to plastic degradation.
01 Oct 2015:
International Space Station
Gives Glimpse of China's Aquaculture Sector
A slew of grid-patterned fish farms line the coast of Liaoning Province in northeast China, as shown in this photograph
Aquaculture in China's Liaoning Province
an astronaut aboard the International Space Station. The aquaculture operations have been built out from the highly agricultural coast to a distance of roughly 4 miles. Liaoning Province ranks sixth in China in terms of aquaculture production, and this group of fish farms, which face the Yellow Sea, is the largest set constructed along the province's coastline. The fish farm basins are built on shallow seabeds, mudflats, and bays. Outer barriers protect the basins from winter storms and large waves generated by passing ships. Most aquaculture products are purchased live in China, with less than 5 percent being killed and processed for selling in local or foreign markets, the U.N. Food and Agriculture Organization (FAO), says. Shellfish, a traditional marine food source, still dominates China's marine production, according to the FAO's Fisheries and Aquaculture Department, accounting for 77 percent of the market.
24 Sep 2015:
Nearly Half of U.S. Seafood
Is Wasted Annually, New Study Shows
As much as 47 percent of the edible U.S. seafood supply is wasted each year
, with more than half of that waste coming
Maine Avenue Fish Market in Washington, D.C.
at the consumer level as people throw away spoiled or uneaten seafood at home, according to a new study. Researchers from the Johns Hopkins Center for a Livable Future estimated the edible U.S. seafood supply at 4.7 billion pounds a year, and said that 2.3 billion pounds of that are wasted. The study, published in the Journal Global Environmental Change
, said that 573 million pounds are lost annually as commercial fisherman catch and discard the wrong species. Roughly 330 million pounds are lost during distribution and retail, and 1.3 billion pounds are lost at the consumer level. The researchers recommended a number of changes to reduce the waste, including stricter limits on by-catch by commercial fishermen and efforts to encourage consumers to purchase frozen seafood.
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.
17 Sep 2015:
Chaotic Illegal Timber Trade
Threatens Crucial Forests in Southeast Asia
A murky, illegal timber trade enabled by systemic corruption exists between China and Myanmar and is worth hundreds of millions of
Illegal log trucks in Kachin wait to cross into China.
dollars annually, making it one of the world's largest illegal timber schemes, according to a new analysis by the Environmental Investigation Agency
(EIA). At stake are some of the most ecologically important remaining forests in Southeast Asia, EIA says. The report documents how Chinese businesses pay in gold bars for the rights to log entire mountains and smuggle timber out of Myanmar's conflict-torn state of Kachin. The stolen timber, primarily high-value species of rosewood and teak, is increasingly being sourced from deeper within Myanmar to feed factories in south and east China. The trade appeared to have peaked in 2005, when 1.3 million cubic yards of logs crossed the border. A brief hiatus then occurred when Chinese authorities intervened, but the scale is once again nearing peak levels, the EIA says.
16 Sep 2015:
Unchecked Consumerism Causing
Record-Breaking Resource Use, Study Says
Consumption of critical global resources — from meat and coffee to fossil fuels and water — has peaked in recent years, accelerating
Cevahir shopping center in Istanbul, Turkey
climate change, pollution, and resource depletion to unsustainable levels, according to an analysis
by the Worldwatch Institute. The report tracked 24 global consumption trends and found many of them to be record-breaking. Meat production, for instance, has more than quadrupled in the last 50 years, leading to large-scale pressure on water, feeds, and grazing land. Aquaculture production has increased roughly 10 fold since 1984, and today farmed fish account for nearly half of all fish eaten. Global plastic production has also risen continuously over the past 50 years, while recycling rates remain very low. In the United States, for example, only 9 percent of plastic was recycled in 2012. “Untrammeled consumerism lies at the heart of many of these challenges,” said author Michael Renner.
Forum: What the Pope Should
Say in His Upcoming UN Address
In his June encyclical, Pope Francis issued a call for robust individual action and a sweeping transformation of global economic and
political systems to deal with the dual threats of climate change and environmental degradation. On Sept. 25, he will bring aspects of that message to the United Nations. Yale Environment 360
asked leading thinkers on the environment and religion what they would like the pope to say before the U.N. While many said the pope’s encyclical was a potentially transformative moment for stewardship of the planet, others would like Pope Francis to speak out about issues he overlooked or dismissed, including the role of population growth in environmental problems and the vital part that the private sector must play in combating global warming.
11 Sep 2015:
Flooding Fields in Winter May
Help California Water Woes, Study Suggests
Deliberately flooding California farmland in winter could replenish aquifers without harming crops or affecting drinking water, according to
This flooded alfalfa field is part of the study.
from a study by University of California, Davis, researchers. Winter months, when crops are dormant, typically see more precipitation than summer months, when crops are actively growing and farmers rely on groundwater reserves for irrigation. Several water districts have attempted to sequester excess surface water during storms and floods by diverting it into infiltration basins — confined areas of sandy soil — but those basins are scarce. Instead, researchers suggest that some some 3.6 million acres of farmland could serve a similar purpose — particularly fields of wine grapes, almonds, peaches, and plums — because those lands allow deep percolation with little risk to crops or groundwater quality.
In Booming Aquaculture Industry,
A Move to Plant-Based Food for Fish
As the aquaculture industry continues to rapidly expand, with production more than doubling in the past 15 years, fishing pressure
A worker feeds trout.
has grown on the anchovies, sardines, and other species used to make feeds for farmed fish. Now, however, researchers are rapidly developing nutritious plant-based food that can put the aquaculture sector on a more sustainable path. Using protein-rich legumes such as soybeans and combining them with various oil-rich supplements, scientists say they are steadily moving toward all-vegetarian diets for aquaculture fish. “I was told by many [people] that fish require fishmeal because that’s what they eat in the natural world,” says one leading researcher. “But that’s just wrong.”
Solar Decathlon: The Search for
The Best Carbon-Neutral House
What’s the latest in well-designed, energy-efficient solar homes? The U.S. Department of Energy has invited 15 teams from colleges across the country to design and build affordable, energy-efficient, and attractive solar-powered houses for the 2015 Solar Decathlon. In addition to functioning as comfortable homes, the houses in the competition must produce at least as much energy as they consume. Here, e360
takes a look at some of this year's entries, which will be on display in Irvine, California, this October. These houses have been engineered to not only embrace energy efficiency and sustainable design, but also to meet the diverse needs of their future inhabitants, from food production to storm protection and disaster relief.
View the houses.
29 Jul 2015:
Global Population Projected to
Reach 11 Billion by 2100, U.N. Estimates
The current world population of 7.3 billion is expected to reach 8.5 billion by 2030, 9.7 billion by 2050, and 11.2 billion in 2100,
according to a United Nations report
released today. The revised U.N. estimates counter previous projections, which had said that global population would peak at roughly 9 billion by 2050, then gradually decline. Most growth will occur in developing regions, the new report says, especially Africa, which is expected to account for more than half of the world’s population growth between 2015 and 2050. India is expected to become the most populous country, surpassing China around 2022. Nigeria could surpass the United States by 2050, which would make it the third-largest country in the world, the United Nations projects.