For a sense of the medical response to radiation sickness, see:
http://www.mayoclinic.com/health/radiation-sickness/DS00432/DSECTION=treatments-and-drugs
http://www.bt.cdc.gov/radiation/arsphysicianfactsheet.asp
What is Radiation?
Treating radiation sickness
RadTown USA
Radiation is natural and all around us. It can be man-made too. But it’s nothing new. It is, quite simply, part of our lives. RadTown USA is a virtual community showing a wide variety of radiation sources and uses as you may encounter them in everyday life.
Radioactive decay
For an explanation of radionuclides, go to:
http://www.physics.isu.edu/radinf/natural.htm
What is Radiation? The Basics
For the basics of radiation, go to:
http://orise.orau.gov/reacts/guide/define.htm
Chernobyl
For the assessment of the radiation effects of the accident, go to:
http://www.unscear.org/unscear/en/chernobyl.html
www.iarc.fr/en/media-centre/pr/2006/IARCBriefingChernobyl.pdf.
http://www.who.int/ionizing_radiation/chernobyl/backgrounder/en/index.html
Fukushima
For a detailed account of what happened in the Fukushima Daiichi facility, see:
http://www.world-nuclear.org/info/fukushima_accident_inf129.html
For an assessment of lingering danger, see:
http://articles.latimes.com/2012/mar/11/opinion/la-oe-gale-fukushima-20120311
A comprehensive summary by The New York Times of the Japanese enquiry into the Fukushima accident can be found at:
http://www.nytimes.com/2012/07/06/world/asia/fukushima-nuclear-crisis-a-man-made-disaster-report-says.html?_r=0
There is a huge quantity of naturally radioactive elements in the oceans, and some can be harvested:
http://www.newscientist.com/article/dn22201-record-haul-of-uranium-harvested-from-seawater.html
For the effect of the fallout from Fukushima Daiichi on California, see:
http://abcnews.go.com/blogs/health/2011/09/21/fukushima-fallout-in-california-waters-a-threat/
Radioactive fallout
For information see:
http://www.atomicarchive.com/Effects/effects17.shtml