This week, Japan’s Nuclear Regulation Authority decided to use actual dosimeter readings for radiation exposures in repopulating communities. Previously, the agency took aircraft-borne monitor readings and estimated exposures based on the assumption that people remain outdoors 8 hours per day. It turns out that these estimates grossly over-stated the case. The change in methodology is to be applauded as rational and reasonable.
Three months ago, several hundred people returned to their homes in Tamura’s Miyakogi district, and each person was issued a dosimeter. In September, the government appropriated $27 million in funds to also give each of the prior returning evacuees a dosimeter to be monitored by the Prefecture. Since then, thousands of returnees have had their actual exposures monitored. All show that previous dose estimates were exaggerated. Some of the dosimeter-based exposures were seven times lower than had been estimated. The least level of exaggeration was by a factor of three. Many international experts have been saying Japan’s aircraft-based estimates of exposures were too high for nearly two years. Now, there’s actual data to show they have been correct all-along.
Those locations that have been opened to returnees have witnessed less than 40% of the pre-3/11/11 population take advantage of it. The government’s goal has been for 100% repopulation. Those staying away say they are either skeptical of government assurances, don’t trust Tepco, believe any radiation exposure is tantamount to a death sentence, or a combination of the three. But, there are many reluctant individuals who don’t know what to think and opt for the cautious path. These might be the ones the new data could positively influence. The new methodology does not change the long-term goal of having all repopulated areas eventually below Japan’s goal of 1 millisievert per year.
Every returnee to Fukushima has a dosimeter and the actual radiation measurements are at least three times lower than guesstimates from measurements from planes that assume people are outside for 8 hours per day
Longterm solutions to global challenges remain scarce
* Renewed focus on energy efficiency, but CO2 emissions continue to rise
* Fossil-fuel subsidies increased to $544 billion in 2012, renewables received $101 billion in support in 2012
* 1.3 billion people lack electricity, 2.6 billion lack clean cooking facilities
Renewable energy will have significant growth but will only be able to slow the growth of coal, oil and natural gas. Half of the renewable energy added be regular hydroelectric dams (mainly in China.)
Also CO2 emissions continue to increase.
Therefore more nuclear energy is needed for safer energy with less air pollution, less CO2 emissions and fewer deaths. Air pollution kills 2 million each year.
China will have nearly twice the energy usage of the United States because the IEA is forecasting that China will have nearly double the GDP of the United States
John Slough talks about his nuclear fusion propulsion project and his nuclear fusion energy system
John Slough and his team are working to experimentally prove out his direct fusion propulsion system. They hope to show about 1.6 times more power out than power in before 2015 while on their NASA NIAC grants. The plan is to scale up to 200 times gain by 2030.
Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
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