09 Sep 2016:
Popular Insecticide Reduces
Queen Bees’ Ability To Lay Eggs, Study Finds
A new study has found neonicotinoids, the world’s most commonly used insecticide, cause queen honeybees to lay as much as two-thirds fewer eggs,
A queen bee surrounded by members of her colony.
jeopardizing the health and stability of entire bee colonies. The research, conducted by scientists at the University of Nebraska-Lincoln and the University of Minnesota, was recently published in the journal Scientific Reports
. "The queens are… the only reproductive individual laying eggs in the colony," said lead author Judy Wu-Smart
. "If her ability to lay eggs is reduced, that is a subtle effect that isn't (immediately) noticeable, but translates to really dramatic consequences for the colony." The scientists also found colonies exposed to imidacloprid, a type of neonicotinoids, collected and stored less pollen than insecticide-free colonies, and removed just 74 percent of mite-infested or diseased pupae that can infect the entire hive, compared to 95 percent removal by unexposed bees.
08 Sep 2016:
The World Has Lost 10 Percent
Of Its Wilderness Over Last Two Decades
The world has lost one-tenth of its wilderness — an area twice the size of Alaska — over the last 20 years, scientists reported this week in the journal Current Biology
Wilderness loss since the early 1990s.
The hardest hit areas have been the Amazon and Central Africa, which have been plagued by rampant and unregulated logging and other industrial activities in recent decades. The scientists found there are 11.6 million square miles of wilderness remaining on earth, largely located in North America, North Asia, North Africa, and Australia. "The amount of wilderness loss in just two decades is staggering and very saddening," said lead author of the study James Watson
, a biologist at the University of Queensland and the Wildlife Conservation Society. "You cannot restore wilderness. Once it is gone, the ecological process that underpin these ecosystems are gone, and it never comes back to the state it was. The only option is to proactively protect what is left."
Clinton vs. Trump: A Sharp Divide
Over Energy and the Environment
Environmental and energy issues have received relatively little attention from the two major-party candidates in the 2016 U.S. presidential campaign. But when Donald Trump and Hillary Clinton have spoken out on these issues, the differences — like just about everything else about this campaign — have been stark. In a chart, Yale Environment 360
compares what Clinton and Trump have said on topics ranging from climate change to coal. See the graphic.
07 Sep 2016:
Costa Rica Runs on Renewable
Energy For More Than Two Months Straight
Costa Rica has generated 100 percent of its electricity from renewable energy 150 days so far this year, including all of the past two months, according to the Costa Rican Institute of Electricity, the nation’s main power provider. The country’s main source of renewable energy is hydropower, which accounted for 80 percent of Costa Rica’s electricity generation in August, according to Mashable
. Another massive hydroelectric power plant, the Reventazón dam, is scheduled to come online in September, further boosting the nation’s hydroelectric production. Geothermal, powered by Costa Rica’s many volcanoes, generated another 12.6 percent of electricity. Wind and solar make up roughly 7 percent of generation. Experts say Costa Rica is on track to meet, if not beat, last year’s record 299 days of 100 percent renewable energy.
02 Sep 2016:
Scientists Have Found
Another Massive Reef In Australia
Scientists have discovered a massive, deepwater reef
along the outer edge of the Great Barrier Reef in northeastern Australia. The newly charted,
A newly mapped bioherm reef in Australia.
1.5 million-acre marine ecosystem contains thousands of donut-shaped rings known as bioherms, built by the green algae Halimeda
, each of which measure 650 to 1,000 feet across and 66 feet thick. Scientists have known the rings were there since the 1970s, but had no idea how extensive the reef was, said Robin Beaman
, a marine geologist at James Cook University and one of the co-authors of the research. Using LiDAR surveying technology, the Australian scientists found the bioherm reef is three times larger than previously estimated. The structures have likely been built over the past 10,000 years, the scientists said, and will provide clues on how the environment has changed over that time. The research was published in the journal Coral Reefs
01 Sep 2016:
Newly Discovered Fossils Break
Record, Dating Back 3.7 Billion Years Ago
Geologists have found fossils in Greenland dating back 3.7 billion years — the oldest evidence of life on earth discovered to date. The layers of stromatolites, which are made up of fossilized microbes,
3.7 billion-year-old fossils found in Greenland.
were found in the world’s oldest sedimentary rocks, the Isua supracrustal belt along the edge of the Greenland ice cap. They predate the previous fossil record holder by roughly 220 million years, according to Allen Nutman
, a geologist at the University of Wollongong in Australia and lead author of the new findings, published in the journal Nature
this week. The fossils “indicate that as long as 3.7 billion years ago, microbial life was already diverse,” said Nutman. “This diversity shows that life emerged within the first few hundred millions years of Earth’s existence, which is in keeping with biologists’ calculations showing the great antiquity of life’s genetic code.”
Interview: Exploring How and
Why Trees ‘Talk’ to Each Other
Two decades ago, while researching her doctoral thesis, ecologist Suzanne Simard discovered that trees communicate their needs and send each other nutrients via a network of latticed fungi buried in the soil
– in other words, she found, they “talk” to each other. Since then, Simard, now at the University of British Columbia, has pioneered further research into how trees converse, including how these fungal filigrees help trees send warning signals about environmental change, search for kin, and transfer their nutrients to neighboring plants before they die. Simard is now focused on understanding how these vital communication systems, which she compares to neural networks in human brains, could be disrupted by environmental threats, such as climate change, pine beetle infestations, and logging. “These networks will go on,” she told Yale Environment 360
. “Whether they're beneficial to native plant species, or exotics, or invader weeds and so on, that remains to be seen.” Read the interview.
30 Aug 2016:
To Stop Poachers, Zimbabwe
Begins Dehorning Entire Rhino Population
Zimbabwe reportedly plans to dehorn its more than 700 rhinos by the end of the year in an effort to discourage illegal poaching. Poachers killed a record 1,305 rhinos throughout Africa last year,
A recently dehorned white female rhino in Zimbabwe.
including 50 in Zimbabwe, double what the country experienced in 2014. Despite an international ban on buying or selling rhino horn that has been in effect since 1977, the substance is a prized traditional medicine in Asia, thought to boost virility and cure cancer. "We want to send a message to poachers that they will not get much if they come to Zimbabwe,” Lisa Marabini, director of operations with Aware Trust Zimbabwe, which is helping the Zimbabwe Parks and Wildlife Management Authority remove horns, told Reuters
. Zimbabwe officials said dehorning a rhino costs $1,200. According to Bloomberg
, they have already dehorned 45 animals, and are looking for donors to help fund the rest.
Thousands of Homes Keep Flooding,
Yet They Keep Being Rebuilt Again
More than 2,100 properties across the U.S. enrolled in the National Flood Insurance Program have flooded and been rebuilt more than 10 times since 1978, according to a
new analysis of insurance data by the Natural Resources Defense Council
Flooding in Denham Springs, Louisiana.
(NRDC). One home in Batchelor, Louisiana has flooded 40 times over the past four decades, receiving $428,379 in insurance payments. More than 30,000 properties in the program, run by the Federal Emergency Management Agency, have flooded multiple times over the years. Those homes, known as “severe repetitive loss properties,” make up just 0.6 percent of federal flood insurance policies. But they account for 10.6 percent of the program’s claims — totaling $5.5 billion in payments.
26 Aug 2016:
Ragweed Allergies Could Double
In Europe as Global Temperatures Rise
The number of people suffering from ragweed allergies in Europe could more than double by mid-century due to climate change, according to a new study published in the journal
Environmental Health Prospectives
Ragweed (Ambrosia artemisiifolia)
. Warming global temperatures, the research found, will help increase the distribution of ragweed (Ambrosia artemisiifolia
) by making more areas of the continent suitable for its growth. Higher temperatures will also make growing seasons longer and increase pollen concentration in the air. Ragweed allergies, popularly known as hay fever, could impact 77 million people in Europe by 2041 to 2060, up from 33 million today, said the new study, led by scientists at the University of East Anglia. Allergies cost Europe $62 billion a year in lost productivity and are responsible for four million sick days worldwide, according to the news site Quartz
25 Aug 2016:
Scientists Find New Way
To Convert Carbon Dioxide into Energy
Scientists have discovered a way to convert greenhouse gas emissions into a fuel
in a single step using a light-driven bacterium, according to new research published in the Proceedings of the National Academy of Sciences
. A team of U.S. scientists, led by biochemists at Utah State University, used a modified version of the phototrophic bacterium Rhodopseudomonas palustris
as a catalyst to break apart carbon dioxide and turn it into hydrogen and methane, the latter of which can be burned to generate electricity. "It's a baby step, but it's also a big step," said Utah State biochemist Lance Seefeldt
, a co-author of the study. "Imagine the far-reaching benefits of large-scale capture of environmentally damaging byproducts from burning fossils fuels and converting them to alternative fuels using light, which is abundant and clean."
24 Aug 2016:
How Elephant Seals Are
Helping Scientists Study Climate Change
A group of southern elephant seals is helping scientists monitor
how climate change is impacting Antarctica by tracking water temperature, depth, and salinity as they swim and dive around the frozen continent.
An elephant seal wearing a data tracker.
Most recently, data from the seals — which routinely dive to depths of 1,000 to 2,000 feet — showed that water melting off the Antarctic ice sheet is causing the surrounding seas to become less salty, disrupting a conveyor belt-like system that transfers heat and nutrients around the globe. The new findings were published this week in the journal Nature Communications
. The elephant seal data, as well as records from monitoring devices on other marine mammals, have generated more than 500,000 vertical profiles of temperature and salinity in the world’s oceans and helped inform nearly 100 scientific studies. “"At the moment it's all about filling gaps” in the environmental records, lead author Guy Williams of the University of Tasmania told the Australian Broadcasting Corporation
. “The [seals] have gone to areas where we've never had an observation before."
23 Aug 2016:
Study Shows Humans Learning
To Use Natural Resources More Efficiently
Humanity’s influence on the natural world is widespread, but a new study published in the journal Nature Communications
finds promising signs that we are slowly learning to live in a more sustainable way. The study found that between 1993 and 2009, the global population grew 23 percent and the global economy grew 153 percent. Meanwhile, the global human footprint grew only 9 percent over the same period. "Seeing that our impacts have expanded at a rate that is slower than the rate of economic and population growth is encouraging," said lead author Oscar Venter, an ecologist at the University of Northern British Columbia. "It means we are becoming more efficient in how we use natural resources." The study authors warned, however, that even with the good news, human activity affects 75 percent of the planet’s surface and remains “perversely intense, widespread, and rapidly intensifying in places with high biodiversity.”
For China’s Massive Data Centers,
A Push to Cut Energy and Water Use
China’s 1.37 billion people, many of them fully connected to the Internet, use an enormous amount of energy as they email, search the Web, or stream video.
Solar panels atop a green data center in Hangzhou.
Indeed, the Chinese government estimates that the country’s data centers alone consume more electricity than all of Hungary and Greece combined. But as Chinese technology and internet businesses look to burnish their environmental credentials and lower costs of operation, many are working to run their massive computing facilities more sustainably. Globally, tech giants such as Microsoft, Google, and Amazon are making rapid progress in this field, as they boost energy efficiency at data centers and seek to completely power their operations using renewable energy.
19 Aug 2016:
Scientists Find 1,075-Year-Old
Tree in Northern Greece, Europe’s Oldest
Scientists have discovered the oldest known living tree
in Europe, dating it at more than 1,075 years old. The Bosnian pine (Pinus heldreichii
) — a densely branched, slow-growing tree —
Europe's oldest tree, a Bosnian pine, in Greece.
was found in northern Greece, high in the Pindus Mountains. A team of Swedish, German, and U.S. scientists extracted a core of the tree’s one-meter thick trunk, and counted the rings that mark its annual growth—a dating technique known as dendrochronology. They found the tree started its life in 941. "I am impressed, in the context of Western civilization, all the human history that has surrounded this tree, all the empires – the Byzantine, the Ottoman – all the people living in this region,” said University of Stockholm dendrochronologist Paul Krusic, who led the research. “So many things could have led to its demise. Fortunately, this forest has been basically untouched for over a thousand years."
18 Aug 2016:
Urine From Large Fish Critical
To Reef Health—And Fishing Is Reducing It
Studies have shown that large fish such as grouper, snapper, and barracuda release key nutrients essential for healthy coral reefs through their urine and body tissue.
A barracuda swims along a Caribbean coral reef.
Now, new research in Nature Communications
has found that in areas where fishing occurs, nearly half of these nutrients are missing from the reefs, threatening their well-being. The study was conducted by four U.S. scientists, who surveyed 143 fish species at 110 sites across 43 Caribbean coral reefs, with varying levels of fishing activity, from marine preserves where anglers are banned to heavily fished reefs. “This study is useful to understand alternative ways fishing is affecting coral reef ecosystems,” said Jacob Allgeier
, an ecologist at the University of Washington and lead author of the new study. “Simply stated, fish biomass in coral reefs is being reduced by fishing pressure. If biomass is shrinking, there are fewer fish to pee.”
17 Aug 2016:
NASA Graphic Shows Severity of
Rainstorm That Caused Louisiana Flooding
A new graphic created by NASA and the Japan Aerospace Exploration Agency illustrates the severity
of a recent rainstorm that caused widespread flooding in Louisiana this week,
Rainfall totals in the southeastern U.S.
killing 11 people and forcing tens of thousands of residents from their homes. As much as 31 inches of rain fell in the southeastern U.S., much of it over a period of just three days, in what forecasters classified a 500-year storm event. An international team of scientists called the flooding “a classic signal of climate change
,” and warned that heavy rain events are becoming more frequent as the oceans and atmosphere warm up, feeding more moisture-laden storm systems. The New York Times reports
that five others states have experienced deadly flooding in the last 15 months, including Oklahoma, Texas, and South Carolina.
16 Aug 2016:
July Was the Hottest Month on
Record, Continuing Steak of High Temps
July was the world’s hottest month since modern temperature record keeping began in 1880, according to new NASA data released this week.
July 2016 temperatures compared to average.
July measured 1.27 degrees F above the 1951-1980 average, and 0.2 degrees F above July 2015, the previous record. This year has seen a streak of record-breaking monthly temperatures, fueled by a strong El Niño and climate change. Gavin Schmidt, the director of NASA’s Goddard Institute of Space Studies, said on Twitter
that 2016 now has a 99 percent chance of being the hottest year on record. If that happens, it will be the third such year in a row, reported Climate Central
. Fourteen of the 15 hottest years on record have occurred since the start of the 21st century.
15 Aug 2016:
Researchers Discover Ocean
Crust Dating Back 340 Million Years
Scientists have found what they believe is the world’s oldest piece of ocean floor — dating to more than 300 million years ago — in the Mediterranean Sea.
The Herodotus Basin in the eastern Mediterranean Sea.
Because shifting tectonic plates continuously drag seafloor rock into the earth’s mantle, most ocean crust is younger than 200 million years. The new discovery, found in the Herodotus Basin between Cyprus, Crete, and Egypt, indicates that area of seafloor is likely a remnant of the Tethys Ocean, which existed at the time of the Pangaea supercontinent, according to a new study in the journal Nature Geoscience
. To determine the rock’s age, scientists dragged a magnetometer
behind a research vessel on four different trips, measuring the magnetic signals in the underlying seafloor, and comparing them to signals of the African continental plate and the earth’s shifting magnetic alignment over millions of years. They determined that the oceanic crust in the Herodotus Basin is between 315 and 365 million years old.
12 Aug 2016:
July Electric Car Sales in China
Rose by 188 Percent Over Last Year
Chinese consumers bought 34,000 new electric cars in July, a 188 percent jump over the same period last year, according to CleanTechnica
, an energy and technology news organization. The monthly total puts China on track to sell 400,000 electrical vehicles in 2016, accounting for 1.5 percent of the total auto sales market — larger than annual EV sales in Europe, or the U.S., Canada, and Mexico combined. By the end of the year, China is projected to have 700,000 electric cars on its streets; the vast majority of EV sales, 96 percent, are for Chinese-made cars, including from manufacturers BYD Auto, Zhidou, and SAIC Motor. Tesla accounts for just 2 percent of EV sales in the country, and Porsche just 1 percent.
11 Aug 2016:
Shipping Noise Causes Whales
To Dive More Slowly and Forage Less
Ocean noise caused by shipping can cause humpback whales to dive more slowly and forage less frequently, according to new research
in the journal Biology Letters
A humpback whale diving.
A team of U.S. and U.K. researchers tagged 10 humpbacks in Stellwagen Bank National Marine Sanctuary, off the coast of Massachusetts, with devices that simultaneously tracked the whales’ movements and underwater noise. They found that as ship noise increased
, the whales dove 15 percent more slowly and did one-third fewer side-roll feedings, a foraging technique humpbacks use to catch fish near the seafloor. The findings are the latest addition to a growing list of negative impacts
from ocean noise on marine mammals, including disrupted communication, higher stress levels, and increased vulnerability as acoustic pollution masks predator movement. “Chronic impacts of even small reductions in foraging efficiency could affect individual fitness and translate to population-level effects on humpback whales,” the scientists wrote.
09 Aug 2016:
Climate Change Has Caused
World's Second Largest Lake To Stop Mixing
Global warming is reducing fish stocks and disrupting circulation in Lake Tanganyika, one of the world’s oldest and largest lakes and a vital source of food and economic activity for East and Central Africa,
Fishermen on Lake Tanganyika.
according to new research published in the journal Proceedings of the National Academy of Sciences
. Under normal conditions, lakes mix a few times a year as seasons change. Decreasing air temperatures cool oxygen-rich surface waters, making them more dense so they sink to the bottom. Nutrient-rich water from deep within the lake then gets pushed to the surface. But rising temperatures, the new study finds, is disrupting this mixing. Without the circulation, fish and other marine life aren’t getting the nutrients they need. Suitable fish habitat near the lakebed has decreased 38 percent since the mid-1900s, the study found. Lake Tanganyika provides an estimated 60 percent of animal protein in the diets of local people, according to The Washington Post
08 Aug 2016:
Ending U.S. Oil Subsidies
Would Have Minimal Impact, Study Says
Eliminating the U.S. government’s $4 billion in annual petroleum industry subsidies would have only a minor impact on American oil and natural gas production and consumption, but would strengthen the country’s influence in pushing for global action to slow climate change, according to a report by the Council on Foreign Relations.
said that ending the three major federal petroleum subsidies would cut domestic production by 5 percent by 2030, which would increase international oil processing by just one percent. U.S. natural gas prices could go up by as much as 10 percent, and natural gas consumption and production would likely fall about 4 percent, the study found. Petroleum industry subsidies are a political flashpoint, with many Democrats arguing for their elimination and Republicans saying they are vital to U.S. energy security. But the study’s author concluded that “U.S. energy security would neither increase nor decrease substantially” if the subsidies are ended.
05 Aug 2016:
Melting Ice Sheet Could Expose
Abandoned U.S. Arctic Military Base
The rapidly melting Greenland ice sheet could unearth a secret, Cold War-era military base as early as next century, according to a new study in the journal Geophysical Research Letters
. Camp Century was built in 1959 to
Entrance to Camp Century.
explore whether the U.S. could covertly deploy ballistic missiles from within the ice sheet, a mission known as Project Iceworm
. By 1967, the military had abandoned the base with little clean up, expecting it would be naturally entombed as snow and ice continued to accumulate on the Greenland ice cap. But warming global temperatures mean that ice loss in this frigid area of northwestern Greenland could exceed gains from new snowfall within 75 years, the study found. The hidden base could be exposed just a few decades later, along with all of the “physical, chemical, biological, and radiological wastes abandoned at the site,” the authors wrote.
04 Aug 2016:
UNESCO Moves To Expand
World Heritage Sites Into the Deep Ocean
UNESCO has launched a campaign
to include deep-sea ecosystems in its list of World Heritage Sites. Previously, only sites within national jurisdiction,
A Dumbo octopus in the deep sea.
either on land or close to shore, could be given heritage status and UNESCO protection. But ecosystems within the open ocean, which covers more than half the planet, deserve similar classification, UNESCO says. In a new report, World Heritage in the High Seas: An Idea Whose Time Has Come
, the organization presents five biodiversity hotspots—many of which are at risk from climate change, pollution, over-fishing, and deep-sea mining—worthy of recognition: the Costa Rica Thermal Dome; the White Shark Café, a shark gathering point in the Pacific Ocean; the Sargasso Sea; the Lost City Hydrothermal Field, with its 200-foot carbonate towers, in the Atlantic Ocean; and the Atlantis Bank, a sunken fossil island, in the Indian Ocean.
03 Aug 2016:
Roughly 2 Percent of U.S. Homes
At Risk from Sea Level Rise, Report Finds
Almost 1.9 million homes in the U.S. — roughly 2 percent of the nation’s housing stock, worth $882 billion — could be underwater by 2100 with six feet of sea level rise,
Boston homes at risk of flooding.
according to a new report by Zillow
, an online real estate database. One in eight Florida homes, representing $413 billion in property value, could flood by the end of the century. In Hawaii, one in 10 homes are at risk and in New Jersey, one in 13. The new analysis is based on climate projections and mapping from the National Oceanic and Atmospheric Administration, as well as Zillow’s database of 100 million U.S. properties. It found coastal cities, such as Miami and Honolulu, are particularly vulnerable to sea level rise. More than 1 in 6 Boston homes could be underwater by 2100. These estimates don’t include commercial buildings or government properties.
02 Aug 2016:
Anthrax Outbreak in Northern
Russia Linked to Rising Global Temperatures
Soaring Arctic temperatures have released anthrax long frozen in the Russian tundra, sickening scores of nomadic herders, including 50 children, and killing one 12-year-old boy, according to news reports
. More than 2,300 reindeer have also died from the disease, known locally as the “Siberian plague.” Anthrax spores can lie dormant in frozen permafrost, animals, and human remains for hundreds of years, and eventually seep into groundwater during a thaw. The last anthrax outbreak in northern Russian happened 75 years ago, in 1941. Temperatures in the Yamal Peninsula, located 1,200 northeast of Moscow, reached 95 degrees F this past month. “Such anomalous heat is rare for Yamal, and that’s probably a manifestation of climate change,” Alexei Kokorin, head of WWF Russia’s climate and energy program, told The Guardian
01 Aug 2016:
Bacteria in Sea Ice Could Play
Role in Mercury Pollution in Oceans
Scientists have discovered bacteria living in Antarctic sea ice that could play a role in mercury contamination of fish, birds, and other marine species.
Antarctic sea ice.
The bacteria, Nitrospina
, can transform mercury found in sea ice — originating from sources such as coal-fired power plants — into the more toxic methylmercury. The heavy metal pollutant—which impacts brain development and can cause mental and physical ailments—accumulates in higher concentrations in marine life as it moves up through the food chain. The findings were published Monday in the journal Nature Microbiology
by scientists at the University of Melborne, the U.S. Geological Survey, and Lawrence Livermore National Lab. John Moreau, a geomicrobiologist at the University of Melbourne who helped lead the study, said in a statement
that the findings beg further study into the sources and behavior of mercury in the oceans, "particularly in a warming climate and when depleted fish stocks means more seafood companies are looking south."
29 Jul 2016:
Changing Arctic Tundra Could
Radically Alter Shorebird Breeding Grounds
A new study projects that global warming could dramatically affect the tundra breeding habitat of 24 shorebird species, with 66 percent to 83 percent losing most of their suitable nesting territories.
Shifts in Arctic shorebirds.
Researchers modeled breeding conditions for these migratory shorebird species — some of which travel more than 10,000 miles from Antarctica or southern South America to breed in the Arctic — and compared projected 21st century conditions to the last major warming event more than 6,000 years ago. The study, published in Global Change Biology
, concluded that a warming and drying tundra could force many species to shift their breeding territories to the Arctic coastline by 2070, causing some birds to completely change their migration routes. “Climate change is also opening up the Arctic to threats such as mining and tourism, and we must make sure we protect key places for all Arctic species, including these amazing migratory birds,” lead author Hannah Wauchope said in a University of Queensland press release
27 Jul 2016:
Ukraine Looking to Turn
Chernobyl Into a Massive Solar Farm
Chernobyl could soon start producing energy again — this time as a massive solar farm. Thirty years after the meltdown of the nuclear power plant,
The ghost town Pripyat.
Ukraine is looking for investors for a 1-gigawatt solar farm in the 1,000-square-mile exclusion zone, where radiation levels remain too high for farming or forestry, reported Bloomberg
. The project would cost $1.1 billion and transform Chernobyl into one of world’s largest solar installations. Government officials say that two U.S. investment firms and four Canadian energy companies have expressed interest in the project. The European Bank for Reconstruction & Development is also considering financing the solar farm. “The Chernobyl site has really good potential for renewable energy,” Ukraine’s environment minister Ostap Semerak said
. “We already have high-voltage transmission lines that were previously used for the nuclear stations, the land is very cheap, and we have many people trained to work at power plants.”