a useful conversation table from everything about radaiton seviel.
* 1 rem = 0.01 Sv = 10 mSv
* 1 mrem = 0.01 mSv = 10 μSv
* 1 Sv = 100 rem
* 1 mSv = 100 mrem = 0.1 rem
* 1 μSv = 0.1 mrem

An competition of the radiation servelt from HOng KOng and Japan as today are 0.08 and 0.054.
http://epa.gov/radiation/understand/health_effects.html Hong Kong - 0.08-0.14uSV/hour
http://www.weather.gov.hk/radiation/rmn_hourly_c.htm Japan - 0.054uSV/hours http://www.pref.saitama.lg.jp/page/housyasenryou.html

The other useful article about Japanese nuclear scare stories are baseless:envoy
http://www.scmp.com/portal/site/SCMP/menuitem.2c913216495213d5df646910cba0a0a0/?vgnextoid=522f7a4a657b3310VgnVCM100000360a0a0aRCRD&vgnextfmt=teaser&ss=Asia+%26+World&s=News