You’ve likely heard this argument before: “The wind doesn’t always blow and the sun doesn’t always shine, so we can’t rely on renewable energy.” However, a series of recent events undermine the false dichotomy that renewable energies are unreliable and that coal, nuclear and natural gas are reliable.
The Intermittency of Fossil Fuels & Nuclear [19Aug11] - 0 views
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There are too many reasons to list in a single blogpost why depending on fossil and nuclear energies is dangerous, but one emerging trend is that coal, natural gas and even nuclear energy are not as reliable as they are touted to be. Take for instance the nuclear disaster still unfolding in Japan. On March 11, that country experienced a massive earthquake and the resulting tsunami knocked out several nuclear reactors on the coast. Three days later, an operator of a nearby wind farm in Japan restarted its turbines - turbines that were intentionally turned off immediately after the earthquake. Several countries, including France and Germany, are now considering complete phase-outs of nuclear energy in favor of offshore wind energy in the aftermath of the Japanese disaster. Even China has suspended its nuclear reactor plans while more offshore wind farms are being planned off that country’s coast.
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In another example much closer to home, here in the Southeast, some of TVA’s nuclear fleet is operating at lower levels due to extreme temperatures. When the water temperatures in the Tennessee River reach more than 90 degrees, the TVA Browns Ferry nuclear reactors cannot discharge the already-heated power plant water into the river. If water temperatures become too high in a natural body of water, like a river, the ecosystem can be damaged and fish kills may occur. This problem isn’t limited to nuclear power plants either.
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Sunflowers Fail To Remove Radiation in Fukushima [19Sep11] - 0 views
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An experiment to test the power of sunflowers to absorb toxic radiation has failed to prove effective near the site of the nuclear disaster at Fukushima, Japan. The Asahi Shimbun reports that the sunflowers removed only .05 percent of the radioactive cesium in the ground, while the removal of just over an inch (3 centimeters) of topsoil along with grass removed up to 97 percent of the radioactive cesium. It was hoped that sunflowers would concentrate radioactive waste and could then be removed more easily than the wholesale “scraping” of soil and compost that it seems will be required. In the meantime scientists are studying ways to decontaminate the forests near the nuclear accident site. According to the Japan Times, the prefecture (county) where the plant is located is 70% forested, and efforts to date have focused on decontaminating urban areas. Removing the contaminated soil and other material from the forest requires such extreme removal methods that the forest’s ecosystem will be seriously damaged.
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Whether the radiation is removed by scraping soil or removing plant matter, the radioactive waste still needs to be safely stored. The government has not yet selected a permanent storage site for the tons of soil and debris that needs to be sequestered. Anti-Nuclear Protests Hit Tokyo
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The Japanese public’s trust in nuclear power is clearly ebbing, as tens of thousands of citizens took to the streets of Tokyo today (Monday) to protest nuclear power. Police estimated the crowd at 20,000 (while organizers claimed more) as protesters carried signs saying “Sayonara Nuclear Power” to urge the government to eliminate nuclear power from the nation’s energy grid. Nuclear accounted for 30 percent of Japan’s energy use prior to the Fukushima incident. There have been energy shortages as 30 of the country’s 54 reactors have been taken off line to enable inspections. Large businesses have been asked to take measures to conserve energy, such as adjusting thermostats, varying schedules around peak demand and cutting back on overtime. It has been six months since three of the Fukushima nuclear plant’s six reactors experienced meltdowns following a catastrophic earthquake and tsunami. Surrounding air, soil and water was contaminated and 100,000 residents were forced to evacuate.
The Environmental Case for Nuclear Energy - Korea [26Sep11] - 0 views
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Six months after the Fukushima disaster, the repercussions of history’s second-largest nuclear meltdown are still being felt, not only in Japan but around the world. Predictably, people are rethinking the wisdom of relying on nuclear power. The German and Swiss governments have pledged to phase out the use of nuclear power, and Italy has shelved plans to build new reactors. Public debate on future nuclear energy use continues in the United Kingdom, Japan, Finland, and other countries.So far, it is unclear what the reaction of the Korean government will be. Certainly, the public backlash to nuclear energy that has occurred elsewhere in the world is also evident in Korea; according to one study, opposition to nuclear energy in Korea has tripled since the Fukushima disaster. However, there are countervailing considerations here as well, which have caused policy-makers to move cautiously. Korea’s economy is often seen as particularly reliant on the use of nuclear power due to its lack of fossil fuel resources, while Korean companies are some of the world’s most important builders (and exporters) of nuclear power stations.
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There are three primary reasons why nuclear power is safer and greener than power generated using conventional fossil fuels. First ― and most importantly ― nuclear power does not directly result in the emission of greenhouse gases. Even when you take a life-cycle approach and factor in the greenhouse gas emissions from the construction of the plant, there is no contest. Fossil fuels ― whether coal, oil, or natural gas ― create far more global warming.
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The negative effects of climate change will vastly outweigh the human and environmental consequences of even a thousand Fukushimas. This is not the place to survey all the dire warnings that have been coming out of the scientific community; suffice it to quote U.N. Secretary General Ban Ki-moon’s concise statement that climate change is the world’s “only one truly existential threat … the great moral imperative of our era.” A warming earth will not only lead to death and displacement in far-off locales, either. Typhoons are already hitting the peninsula with greater intensity due to the warming air, and a recent study warns that global warming will cause Korea to see greatly increased rates of contagious diseases such as cholera and bacillary dysentery.
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Nuclear Energy in South Africa [4Sep11] - 0 views
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Dr. Yvres Guenon from AREVA gave a good pitch at the recent SANEA talk on “The nuclear program is a true opportunity for South Africa. He started off stating that we weren’t alone in the energy epidemic; “don’t think you are the only country with bad decision makers” he said. Europe is in the same boat. In the past countries went coal as it was the only option, but in the future it will be about finding the ‘right mix’ of energy producers. Guenon’s solution is to include nuclear power in that mix.
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The argument was a fair one – nuclear does have financial benefits to it. The cost might be a bit hefty in the beginning; but most (if not all) energy providers are. The one thing about nuclear is that the price of energy thereafter doesn’t change. What you pay today for your electricity will stay that way for the next 50 – 60 years. In his presentation he included a diagram that showed nuclear was the least in greenhouse gases. Europe doesn’t have many options for energy development but here in South Africa, where we are blessed with sun and the south-easter wind, we have a variety. Even though we can include renewable in our mix, Guenon showed that solar costs 10 times more than coal and wind was four times more.
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Guenon’s main purpose of his presentation was also the job development and therefore economy improvement, that comes from nuclear power. As nuclear involvers building an entire plant consisting of a variety of technologies and includes a variety of industries there is huge potential in employment and expansion in industries. Other energy producers, such as solar or wind, involve a slice of professions and specific exclusive industries. Nuclear touches on engineers, technicians, welders, management and a wide variety of workers. When asked about the chances of an accident, Guenon simple answer was “about the same chance of a meteorite landing in your lounge.” It creates abundant energy at a fraction of the price, while creating job opportunities and improving the economy; all of this and to top it off – no coal. On the outside it seems to provide the answer to all our problems. So what’s the catch? “Dr Guenon!” A hand shot up in the audience. “What about waste?”
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Obama Greenlights BP's Return to Drilling in the Gulf [24Oct11] - 0 views
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A lot of people are not pleased with President Obama after he approved a plan for BP to drill in the Gulf of Mexico, the first of its kind since last year's Deepwater Horizon explosion. Among the upset factions is the top Democrat on the House Natural Resources Committee, Ed Markey. "Comprehensive safety legislation hasn't passed Congress, and BP hasn't paid the fines they owe for their spill, yet BP is being given back the keys to drill in the Gulf," he said. The New York Times explains the plan: It was another sign that oil exploration in the gulf is coming back to normal, although energy companies continue to complain that the permitting process for drilling new wells remains far slower than before the accident. The federal government’s approval of the BP plan to drill up to four exploratory wells nearly 200 miles from the Louisiana coast was positive news for BP, which has struggled to recover from the April 2010 accident that left 11 workers dead and spilled millions of barrels of oil into the gulf.
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About those recovery efforts, a study published last week reported that seafood in the Gulf is still not safe for pregnant women and children to eat. All year, a number of environmentalists have been expressing doubts about the Gulf's still struggling ecosystem, despite BP asserting that the recovery effort was finishing up. "It's not OK down there," marine biologist Samantha Joye said in April. "There are a lot of very strange things going on – the turtles washing up on beaches, dolphins washing up on beaches, the crabs. It is just bizarre." The Times wasn't able to get BP to comment on the latest decision but pointed to a brief statement from the company that said, "We are working through the regulatory process."
Hanford's Nuclear Option - Page 1 - News - Seattle - Seattle Weekly [19Oct11] - 0 views
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Department of Energy scientists allege catastrophic mismanagement of the costliest environmental cleanup in world history.
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During Hanford's lifespan, 475 billion gallons of radioactive wastewater were released into the ground. Radioactive isotopes have made their way up the food chain in the Hanford ecosystem at an alarming rate. Coyote excrement frequently lights up Geigers, as these scavengers feast on varmints that live beneath the earth's surface. Deer also have nuclear radiation accumulating in their bones as a result of consuming local shrubbery and water.
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The EPA has deemed Hanford the most contaminated site in North America—a jarring fact, as the Columbia River, lifeline for more than 10,000 farmers and dozens of commercial fisheries in the Pacific Northwest, surges along Hanford's eastern boundary.
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