Monday, December 15, 2014

CW December 2014 article cuyahoga river

In June of 1969, the Cuyahoga River, a feeder to Lake Erie and Cleveland, Ohio’s main waterway, burst into flames. The August 1969 issue of Time magazine featured an article on the fire, and it wasn’t kind: “Some river! Chocolate-brown, oily, bubbling with subsurface gases, it oozes rather than flows.” Cleveland, my hometown, a great American city with world class museums, music and major league sports, would soon be known as “the mistake on the lake.”

America’s environmental awareness did not have its beginnings with the Cuyahoga blaze, but the image of the river’s spontaneous combustion became etched in the nation’s consciousness as a symbol of the environmental decay wrought by industrial progress. The Cuyahoga fire is often described in history books as a wake-up call to the nation. By the early 1970s, a strong environmental consciousness took hold.

China today — as it begins to come to terms with air, water and land befouled by three decades of industrialization — bears some resemblance to the United States of the late 1960s. The Chinese are beginning to wonder, just as Americans did back then, whether “industrial progress” has come at too high a cost to the environment. Attitudes in China are changing.

When the PEW Research Center asked Chinese people in a 2008 survey to rate the seriousness of air pollution on a scale ranging from “not a problem at all” to a “very big problem,” 31 percent rated it a “very big problem.” In 2013, in a repeat of the PEW survey, 47 percent called it a “very big problem.” While these numbers tell us only so much, the trend is clear: environmental anxiety is spreading.

This growing anxiety is reflected in the rising frequency of environmental protests. In the past year, people have taken to the streets in cities throughout the country to protest the building of coal-fired power plants, chemical plants, oil refineries, waste incinerators, and the like. According to Chen Jiping, a former leading member of the Communist Party’s political and legislative affairs committee, pollution is now the leading cause of social unrest in China.

Why this budding environmental consciousness now? The answer is simple: 2013 was, by any accounting, one horrific year for the environment.

The year started with the “airpocalypse.” In January 2013, Beijing was enveloped by a thick, soupy concoction so dirty, so polluted, that day in China’s capital turned to night. The quality of the air over Beijing was worse than a typical airport smoking lounge. The World Health Organization said it was 40 times higher than the level deemed safe to breathe. Since then, incidents of equally deadly air pollution have struck Shanghai, Tianjin, Hangzhou and other cities.

In March, pig carcasses came bobbing up and down the Huangpu River, a major source of Shanghai’s drinking water. For two weeks, not just a few dead pigs or even a few hundred, but 16,000 pig carcasses floated past Shanghai. Farmers upstream were apparently disposing of dead and virus-stricken hogs by dumping them in local rivers.
In 2013 the Beijing government acknowledged what environmentalists had long suspected: some villages in the countryside had become so-called cancer villages, communities where cancer cases “cluster” and far exceed the norm. These villages are usually just downstream from an industrial plant that discharges hazardous waste into rivers that villagers use to drink and to irrigate their crops. Chinese nongovernmental organizations and environmental experts put the current number of cancer villages at more than 450.

In May of 2013, officials in Guangzhou, one of China’s largest and most prosperous cities, informed the public that 44 percent of rice samples sold throughout the city contained dangerous levels of the metal cadmium. Cadmium in rice comes from the contaminated soil in which it is grown and is known to harm the liver, kidneys, lungs, and the respiratory tract — and lead to cancer.

The bad news didn’t end there. People living in northern China were informed by a team of American, Chinese and Israeli researchers that they should expect to live much shorter lives — a full 5.5 years shorter — than their countrymen to the south. The reason: Heavier coal dependency in the north makes the air they breathe that much more toxic than the air in the south. Around the same time, several partner universities and institutions, including the World Health Organization, issued a report finding that 1.2 million Chinese died prematurely in 2010 alone owing to the country’s polluted air.

China’s environment is a disaster. But by casting a bright light on the country’s severe pollution problems, the crises of the past year have stirred a greater environmental consciousness in the people. At the same time, they have spurred the country’s leaders to take more aggressive environmental action.

In March of this year, top officials in Beijing declared a “war on pollution.” A month later they reformed the country’s Environmental Protection Law for the first time since 1989, strengthening the system for fining polluters, permitting some nongovernmental organizations to bring public-interest lawsuits against those who violate the law, and holding local officials accountable for the environmental quality of their regions.

The leadership has banned the building of new coal-fired power plants in key economic areas and all coal use in Beijing by 2020. Trial carbon-trading programs have been introduced in Beijing, Shanghai, Shenzhen and Guangzhou. Caps have been placed on coal consumption in some highly polluted regions. The government has committed $277 billion to an air pollution “action plan” and $333 billion to a water pollution “action plan.” China now invests more than any other country in renewable energy.

Finally, the authorities have restricted the number of cars on the road, set higher vehicle-emission standards and are offering huge rebates on the purchase of electric and hybrid vehicles.

We can’t yet know how effective these measures will be. But we shouldn’t be blind to the enormous effort China is making. Looking back years from now, my guess is that we will regard 2013 as a tipping point — China’s Cuyahoga moment. It was the year China as a nation became environmentally engaged. That engagement isn’t good just for China; it’s good for the entire world.

Daniel K. Gardner teaches Chinese history and environment at Smith College. He is writing a book on environmental pollution in China.
What are some reasons China feels it must make an action plan?
What pollutants does the article mention?
What body systems do the effect?

Define bold-faced words and concepts

CW December 2014 article antibiotic resistance

White House Releases Plan to Fight Antibiotic Resistance
                                                               
The world is at “dire risk” of losing the remarkable power of antibiotic drugs that have saved millions of lives say prominent scientists who delivered a new report to President Obama on Thursday on the growing threat and how to fight it.

The report, which makes for sober reading, is the culmination of an 11-month study by the President’s Council of Advisers on Science and Technology.

“The evolution of antibiotic resistance is now occurring at an alarming rate,” the scientists reported. “This situation threatens patient care, economic growth, public health, agriculture, economic security and national security.”
Last year, FRONTLINE’s Hunting the Nightmare Bacteria showed how drug-resistant bacteria were spreading across the United States and around the globe. We documented the outbreak of a deadly bacteria at the Clinical Center of the National Institutes of Health and told the stories of two young people who fought desperate battles to survive infection. We also explored the reasons why there’s a dearth of new antibiotics coming to market, and we pointed out the government’s lack of focus on the problem.
Although known for decades, the danger of antibiotic resistance has never been a high priority in Washington. But the crisis has taken on new dimensions as the antibiotic pipeline has dried up. A report last year by the Centers for Disease Control and Prevention estimated that 23,000 people die annually in the U.S. and more than 2 million are sickened by resistant infections.
Now, after years of relatively little attention to the issue, the White House is ramping up an effort to do something about antibiotic resistance. The president signed an executive order Thursday that calls for setting up a five-year national “action plan” by next February. The White House also issued a “national strategy” and Obama established a cabinet-level task force to help move things along. The administration also announced a $20 million prize for the development of rapid diagnostic tests to help spot highly resistant infections.
While the president has promised to take action, there’s no telling whether Congress or the administration will be able to muster new spending, legislation or regulatory changes. That heavy lifting will come later—in decisions about how to provide new resources and methods for the fight against drug resistant superbugs.

Improve the ability to track antibiotic resistant bacteria. Knowing where resistant bugs exist and where they are spreading has been a major challenge. The science advisers suggest creating a high-tech nationwide network that would use the latest whole-genome sequencing technology. This would give clinicians and public health officials a much better map about the bacteria and where they are showing up. But it will require $190 million a year.
Boost fundamental research to find out why and how bacteria become resistant to antibiotics. Although some mechanisms are known—the bacteria can pump out or destroy the antibiotic drugs—the science advisers say that we could learn more, especially about the behavior of the so-called Gram-negative bacteria, a kind of bacteria that are showing the most resistance modern antibiotics.
Make it easier to test new antibiotics in clinical trials. For a long time, pharmaceutical companies have said a lengthy, difficult regulatory process discourages the development of new drugs. The science advisers suggest setting up a faster, more efficient way to conduct clinical trials—a key step in testing new drugs for safety and efficacy—just for new antibiotics.
Encourage the pharmaceutical industry to develop new antibiotics. While not endorsing anything specific, the science advisers floated some very ambitious ideas, such as big government rewards or incentives that would attract private investment. But they pointed out that such incentives won’t come cheap. The price tag might be $800 million to get one new antibiotic a year.
Incentivize the health care industry to use antibiotics more carefully. Hospitals have become reservoirs of resistant bacteria and the science advisers suggest that the government could make a big difference by using federal reimbursement for Medicare and Medicaid to force better stewardship of antibiotics. This means making sure that doctors curb overuse of antibiotics, a leading cause of resistance.
Antibiotics are also widely used in American agriculture and more needs to be done to curb their use in raising farm animals. The science advisers suggest that the government seek “substantial changes” in the use of antibiotics on the farm. However, they don’t suggest changes beyond the measures already announced by the Food and Drug Administration, which has asked pharmaceutical companies to voluntarily phase out the use of the antibiotics for promoting growth in farm animals over three years and put antibiotics under the supervision of a veterinarian. The drugs would still be permitted to be added routinely to feed for cattle, swine and poultry for the purpose of disease prevention, which critics have said is still at low doses that would likely drive resistance.

Vocabulary
Define all bold words and phrases

Questions
1.       What are some reasons that scientists feel antibiotics may become ineffective?
2.       How could these antibiotic resistant bacteria spread?
3.       What has the president proposed to reduce the risk?
4.       What are some improvements or goals they identify?
5.       What role might the pharmaceutical industry play?
6.       How are hospitals becoming the focus of research and containment?

7.       How do farm animals contribute to resistance?

Chapter 20 Humans and Pollution. Toxins and pathogens


TEST PRACTICE HERE




Vocabulary Review
Practice test questions
http://quizlet.com/62168606/test

1.AlkaliA substance with a pH greater than 7; also known as a "base" or "caustic"
2.antibiotic pradoxThe misuse of antibiotics causes mutation and subsequent resistance
3.Antibiotic resistancethe evolution of populations of pathogenic bacteria that antibiotics are unable to kill
4.AntidoteA substance that can reverse the adverse effects of a poison
5.BaseA substance with a pH greater than 7; also known as an "alkali" or "caustic"
6.CausticA substance with a pH greater than 7; also known as an "alkali" or "base"
7.chain of infectionA number of components or events that when present in a series, lead to an infection.
8.CholeraAn acute intestinal infection caused by ingestion of contaminated water or food
9.CorrosiveA substance able to corrode tissue or metal (e.g. acids and bases)
10.dose-response curveA graph of the ammount of dose given against the response seen.
11.environmental pollutantsSecond-hand smoke, work chemicals, and pollutants
12.EnzymeA large molecule (protein) that performs a biochemical reaction in the cell
13.epidemiologyA branch of medical science that deals with the incidence, distribution, and control of disease in a population
14.Gram Negative BacteriaType of bacteria that have a thin cell wall covered by an outer plasma membrane. They stain pink in Gram stain. Are typically more resistant to antibiotics.
15.heavy metal toxinsCadmium, silver, mercury, bismuth
16.hormone mimicsCertain pesticides and other synthetic chemicals can act as hormone imposters that may impair reproductive systems and sexual development or cause various physical and behavioral disorders.
17.HydrocarbonA member of a large class of chemicals belonging to the petroleum derivative family; they have a variety of uses, such as solvents, oils, reagents, and fuels
18.Lead poisoningA medical condition caused by toxic levels of the metal lead in the blood
19.MalariaA tropical disease carried by the anopheles mosquito and characterized by chills, fever, and sweating
20.MutationA change in the order of the bases in an organism's DNA; deletion, insertion, or substitution.
21.Neutralizing AgentA substance that counteracts the effects of acids or bases; brings the pH of a solution back to 7
22.OrganophosphateA pesticide that inhibits acetylcholinesterase
23.particulatesTiny particles or droplets that are mixed in with air.
24.pathogensAny microorganism that can cause disease (for example, a virus or bacteria that are disease causing).
25.PoisonAny substance that can harm the human body; also known as a toxin
26.ToxicologyThe study of poisons
27.ToxinAny substance that can harm the human body; also known as a poison
28.TuberculosisAn infectious disease that may affect almost all tissues of the body, especially the lungs
29.VectorA _____ is any animal capable of transmitting pathogens or producing human or animal discomfort or injury.
30.zoonosisAn animal disease that can be transmitted to humans.