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15 Mar 2011 23:39

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World: Fukushima update: Radiation briefly reaches one sievert an hour

  • 1,000 the level the radioactivity reached near the Fukushima reactor, in milli-sieverts per hour – which is a new high, by far
  • 800-600 the level the radioactivity fell to not much longer after that, in milli-sieverts per hour; this is still far more than average source
  • » For context: Please check out our various updates here, here, here, and here.

15 Mar 2011 22:58

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U.S.: Back in the States, Americans raiding geiger counter stockpile

  • cause After last week’s earthquake, a series of nuclear troubles hit the Fukushima reactors and other nuclear reactors throughout Japan. Fukushima most seriously, as we’re sure you’ve read.
  • reaction In the United States, even though the odds are slim to none that the crisis will affect them, sales of geiger counters and potassium iodide have skyrocketed. Has there been a run on tinfoil hats? source

15 Mar 2011 16:20

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World: Video shows town swept away as citizens flee tsunami

  • At the water’s edge: Chilling new amateur video footage of the tsunami that swept away entire Japanese towns and villages. This seems as good a time as any to remind everyone of something we’ve mentioned frequently- if you’re going to donate, first of all, thank you, and second of all, do so intelligently. The idea of people trying to financially exploit natural disasters and human suffering is self-evidently disgusting, and as such informed decisions are important. (EDIT: idroolinmysleep notes that the BBC has a longer version of the clip.) source

15 Mar 2011 14:25

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World: Subsequent quakes, aftershocks are keeping Japan understandably nervous

  • 2 more earthquakes struck throughout Japan on Tuesday source
  • » Obviously, they’re softer than the big one. That said, two more earthquakes (there have reportedly been dozens of lesser quakes and aftershocks since the 9.0 cataclysm last week) shook Japan Tuesday, clocking in at 6.1 and 6.2 on the Richter scale. The latter quake struck an area roughly seventy miles south of Tokyo, while the former hit about sixty miles from the Hamaoka Nuclear Plant, which as you might expect made people a little nervous. Hamaoka has, thankfully, been functioning properly and without incident since the quake, but with the myriad of tragedies and fears the Japanese people presently have, we somehow doubt any rumble has the capacity to feel minor anymore. Here’s hoping the ground will stay still for a while.

15 Mar 2011 10:56

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World: Tracking radiation levels in Tokyo: A minorly scary photo

  • Photo of the day: “A radiation detector marks 0.6 micro-sieverts, exceeding normal levels Tuesday, near Shibuya train station in Tokyo. Concern over possible radiation exposure has increased after a fourth reactor released radiation, Tuesday.” To compare – this level is higher than average, but only a tiny percentage of what’s happening at the plant. 1,000 micro-sieverts per hour equals one milli-sievert per hour. So this is high, but still minor. (Kyodo News/AP) source

15 Mar 2011 10:28

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World: UPDATE: Fukushima’s radiation levels drop significantly

  • 11.9 the current peak radiation count, in milli-sieverts per hour
  • 400 the peak radiation count in milli-sieverts per hour – which was hit last night
  • 300k the peak mSv/hour count at Chernobyl – to keep things in check source
  • » It’s no longer at its peak, and that’s a good thing: The International Atomic Energy Agency says that the decrease happened over a six-hour period. And the IAEA makes a good point that you should keep in mind. “This is a high dose-level value, but it is a local value at a single location and at a certain point in time,” they say. In other words, even if you’re within the 20-mile radius where radiation is likely to hit, the level will most assuredly be far lower than these peak levels. It’s still high, though – one milli-sievert per hour is equal to the yearly legal limit of radiation you’re supposed to get. (see our earlier posts about this topic here and here)

14 Mar 2011 23:40

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World: UPDATE: What does “400 times annual legal limit” mean?

  • 400 the amount of radiation in the air, in milli-sieverts per hour, according to the given estimate
  • 40 the amount of radiation that is, in roentgen per hour – which, don’t get us wrong, is very high
  • 30k the amount of radiation in Chernnobyl had – which Fukushima doesn’t touch source
  • » This is an extremely large jump: One milli-sievert per hour is the legal annual limit for radiation in a year. Our earlier estimate showed a level of 8,217 micro-sieverts. 1,000 micro-sieverts equals 1 milli-sievert. So we went from 8,000 to 400,000 in a couple of hours. This is still no Chernobyl, but this is a huge jump. If it jumps to 1,000,000 micro-sieverts, it leads to radiation sickness – and then we’re in trouble.
 

14 Mar 2011 21:13

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World: Some quick math: How does Fukushima compare to Chernobyl?

  • » To explain: This number comparison is to emphasize the difference between an actual going-to-kill-us-all meltdown and what’s happening in Fukushima. While things could get worse from here, right now, the worst of what’s happening in Fukushima is 0.002739 percent as bad as the worst of the Chernobyl disaster. 400 rontgen is enough radiation to kill you. 10,000 micro-sievert equals 1 rontgen. Chernobyl was pushing out 30,000 rontgen per hour at its core – enough to kill someone in 48 seconds. This is an important point to make – while levels are higher than normal, this is extremely minor on the scale of a real disaster. Oh, and one more thing – Fukushima only hit its 8,217 micro-sievert peak for a very short period. Chernobyl’s level was sustained.

14 Mar 2011 15:00

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World: Donations flood in for Japan’s earthquake relief effort

  • $7.75
    million
    the amount donated to the Red Cross specifically for the Japan quake
  • $1.1
    million
    the amount donated to the Red Cross via text messaging alone source

14 Mar 2011 14:04

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World: Full extent of Japan’s humanitarian crisis yet too early to predict

  • Not much to add: The pervasive, terrible damage done to the Japanese port town of Rikuzentakata, In Iwate Prefecture. source