NYT-1201: STATE OF THE ART A Thermostat That's Clever, Not ...
NYT-1201: STATE OF THE ART A Thermostat That's Clever, Not ...
NYT-1201: STATE OF THE ART A Thermostat That's Clever, Not ...
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ovide enough protection.<br />
Soothing pronouncements by local governments and a<br />
cademics about the eventual ability to live safely<br />
near the ruined plant can seem to be based on lit<br />
tle more than hope.<br />
No one knows how much exposure to low doses of rad<br />
iation causes a significant risk of premature deat<br />
h. That means Japanese living in contaminated area<br />
s are likely to become the subjects of future stud<br />
ies — the second time in seven decades that Japane<br />
se have become a test case for the effects of radi<br />
ation exposure, after the bombings of Hiroshima an<br />
d Nagasaki.<br />
The national government has declared itself respon<br />
sible for cleaning up only the towns in the evacua<br />
tion zone; local governments have already begun cl<br />
eaning cities and towns outside that area.<br />
Inside the 12-mile ring, which includes Futaba, th<br />
e Environmental Ministry has pledged to reduce rad<br />
iation levels by half within two years — a relativ<br />
ely easy goal because short-lived isotopes will de<br />
teriorate. The bigger question is how long it will<br />
take to reach the ultimate goal of bringing level<br />
s down to about 1 millisievert per year, the annua<br />
l limit for the general public from artificial sou<br />
rces of radiation that is recommended by the Inter<br />
national Commission on Radiological Protection. Th<br />
at is a much more daunting task given that it will<br />
require removing cesium 137, an isotope that will<br />
remain radioactive for decades.<br />
Trial cleanups have been delayed for months by the<br />
search for a storage site for enough contaminated<br />
dirt to fill 33 domed football stadiums. Even eva<br />
cuated communities have refused to accept it.<br />
And Tomoya Yamauchi, the radiation expert from Kob<br />
e University who performed tests in Fukushima City