In a paper in this week's Nature, John Harries and his colleagues describe their analysis of the longwave infra-red radiation leaving the earth.

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They spread rapidly and are resistant to radiation and to conventional drugs, leaving patients with little hope of survival.

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If they truly were perfect opposites, equal amounts of the two would have been made in the Big Bang, and they would have annihilated each other long since, leaving only light and other forms of electromagnetic radiation to fill the universe.

ECONOMIST: Fundamental physics

Residents of Fukushima who are concerned that residual radiation will cause additional risk can avoid that by leaving, but they need to recognize that any additional cancers will be statistically unobservable, hidden well below those of natural cancer and the other dangers of modern life.

WSJ: The Panic Over Fukushima

The tsunami which followed knocked out the backup generators, leaving plant operators scrambling to keep the fuel units from overheating, melting down, and releasing radiation into the air and sea.

FORBES: Three Months Later, Japan Still in Meltdown