Researchers at the University of Toronto found that “badly tuned” cars are responsible for most of the air pollution. Read the rest
Read the rest
Reporting this week at the annual American Geophysical Union, scientists from UC Irvine discussed air quality results from samples taken during the 2012 and 2013 Hajj.
The annual pilgrimage brings between 3-4 million people to the holy city of Mecca. Isobel Simpson, the lead researcher on this project, stated that, "The problem is that this intensifies the pollution that already exists. We measured among the highest concentrations [of smog-forming pollutants] our group has ever measured in urban areas – and we’ve studied 75 cities around the world in the past two decades.”
The worst locations were tunnels leading into the Grande Mosque where carbon monoxide levels were up to 300 times higher than baseline measurements, and pedestrians were often walking in large numbers alongside idling motor vehicles. Increases in carbon monoxide are linked to increased numbers of hospitalizations and deaths from heart failure. In addition to carbon monoxide, the team found elevated levels of benzene, black carbon, and other fine particulates that can affect lung function.
The main culprit here that can be addressed by the Saudi government is a lack of regulation over automobiles, gasolines, and exhausts. Currently, there is a significant lack of public transportation in the area, and nearly everyone owns a car. Those cars don't have the devices that are currently required and built into vehicles in the Unites States to limit pollution.
The easiest thing to fix would be separating pedestrians from cars in the tunnels, or at least spreading vehicles out more evenly among the tunnels leading to the Mosque, so that pollutants don't build up as much and negatively affect those walking in. Alternatively, improving ventilation in the tunnels would reduce deadly carbon monoxide build-up.
In the meantime, if you are planning to join the Hajj in the near-future, consider bringing an air-filtering face mask.
Greenpeace this week released a report on soil and rice crops sampled in villages close to a concentration of heavy metals smelters in China's Hunan Province, "an area that ranks first in rice output and among the top five in nonferrous metals production." The results showed that both rice and soil near the industrial complex are contaminated by heavy metals, including lead. "12 out of all 13 rice samples contained excessive levels of cadmium." Read the "Cadmium rice" report at Greenpeace East Asia. Here's a related piece at the New York Times.
Speaks for itself, doesn't it? NASA:
When the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired this image on December 7, 2013, thick haze stretched from Beijing to Shanghai, a distance of about 1,200 kilometers (750 miles). For comparison, that is about the distance between Boston, Massachusetts, and Raleigh, North Carolina. The brightest areas are clouds or fog. Polluted air appears gray. While northeastern China often faces outbreaks of extreme smog, it is less common for pollution to spread so far south.
Erin Brockovich: the real-life unhappy ending of Hinkley, California, and a tale of science for sale
I was born in 1981 and, because of that, I largely missed the part of American history where our rivers were so polluted that they did things like, you know, catch fire. But it happened. And, all things considered, it didn't happen that long ago. The newspaper clippings above are from a 1952 fire on Ohio's Cuyahoga river. Between 1868 and 1969 that river burned at least 13 times.
That's something worth remembering — not just that we once let our waterways get that trashed, but also the fact that we've gone a long way towards fixing it. We took 200 years of accumulating sewage and industrial degradation and cleaned it up in the span of a single generation. At Slate, James Salzman writes about that reversal of environmental fortune, a shift so pronounced — and so dependent upon a functioning government in which a diverse spectrum of politicians recognize the importance of investing in our country's future — that it seems damned-near impossible today.
... discharging raw sewage and pollution into our harbors and rivers has been common practice for most of the nation’s history, with devastating results. By the late 1960s, Lake Erie had become so polluted that Time magazine described it as dead. Bacteria levels in the Hudson River were 170 times above the safe limit. I can attest to the state of the Charles River in Boston. While sailing in the 1970s, I capsized and had to be treated by a dermatologist for rashes caused by contact with the germ-laden waters.
In 1972, a landmark law reversed the course of this filthy tide. Today, four decades later, the Clean Water Act stands as one of the great success stories of environmental law. Supported by Republicans and Democrats alike, the act took a completely new approach to environmental protection. The law flatly stated there would be no discharge of pollutants from a point source (a pipe or ditch) into navigable waters without a permit. No more open sewers dumping crud into the local stream or bay. Permits would be issued by environmental officials and require the installation of the best available pollution-control technologies.
The waste flushed down drains and toilets needed a different approach, so the Clean Water Act provided for billions of dollars in grants to construct and upgrade publicly owned sewage-treatment works around the nation. To protect the lands that filter and purify water as it flows by, permits were also required for draining and filling wetlands.
Image from the Blog on Smog, which also has a really nice timeline of cleanup on the Cuyahoga.
Via Laura Helmuth
At Grist, Jess Zimmerman has an interesting piece about a lake near a notoriously leaky former Soviet nuclear research site, where the radiation level is so high that an hour on the beach can be enough to kill you.
You can’t really blame Lake Karachay for acting up — it comes from a really rough area. The lake is located within the Mayak Production Association, one of the largest — and leakiest — nuclear facilities in Russia. The Russian government kept Mayak entirely secret until 1990, and it spent that period of invisibility mainly having nuclear meltdowns and dumping waste into the river. By the time Mayak’s existence was officially acknowledged, there had been a 21 percent increase in cancer incidence, a 25 percent increase in birth defects, and a 41 percent increase in leukemia in the surrounding region of Chelyabinsk. The Techa river, which provided water to nearby villages, was so contaminated that up to 65 percent of locals fell ill with radiation sickness — which the doctors termed “special disease,” because as long as the facility was secret, they weren’t allowed to mention radiation in their diagnoses.
Suzanne Paulson, UCLA professor of atmospheric and oceanic sciences, saw "Carmageddon" as an opportunity to make use of a "natural experiment." She and a colleague "measured pollutants in the air during the LA freeway shutdown last year, and have now released their findings.
Air quality near the normally busy highway improved by 83 percent that day last July, relative to comparable weekends. Elsewhere in West Los Angeles, the improvement was equally dramatic. Air quality improved by 75 percent on that side of the city and in Santa Monica, and by 25 percent throughout the entire region, as a measure of the drop in ultrafine particulate matter associated with tailpipe emissions.
"We saw what we expected: you take motor vehicles away, the air gets really, really clean," Paulson says, "which tells us that most of the pollution is from motor vehicles from one type or another in this area."
More: L.A.'s 'Carmageddon' Produced Dramatic, Instantaneous Air Quality Improvements (The Atlantic).Another "Carmaggedon" just took place in LA. Wonder if there will be more science to come from this edition.
Nathan Kensinger is an artist "whose work explores hidden urban landscapes, off-limits structures, and other liminal spaces." He told me about a project that he, Laura Chipley, and Sarah Nelson Wright are working on called The Newtown Creek Armada:
It's a public art installation that is using remote control boats and underwater cameras to explore the Newtown Creek, a federal Superfund Site in New York City.
The installation opens this weekend, when we will be inviting the public to pilot our fleet of nine miniature boats, and to film their own voyage on the Newtown Creek. We will also be presenting several videos of our voyages that document the more polluted parts of the creek, which is home to the second largest oil spill in the United States, and has been used as a dumping ground for heavy industry and raw sewage for over 150 years. Despite this history, nature is slowly returning to the area, as we discovered on our voyages.
20 AUGUST—34°42' N 140°19' W
In the middle of the night, I dream that I am at the wheel of a great ship, sailing the Pacific Ocean. A hundred and fifty feet of steel, crowned with a dozen broad sails, forces itself forward through the waves. The rigging creaks with the roll of the ship. Water hisses along the lee rail. I adjust the wheel, peering at the binnacle to see our heading.
We’ve been at sea for nearly a week, and for weeks more we have no hope of seeing land. What we do hope to see, though, is something much rarer, something that amounts to a new and dark wonder of the world.
We are aboard the Kaisei, sailing to the Great Pacific Garbage Patch.
Read the rest