
Key moments in the life of a screen legend. (Sources: Washington Post, Life Magazine, CNN)

This time line provides guideposts on the history of research involving human embryonic stem cells and regulation of that work.

A magnitude 9 earthquake struck Japan on 11 March 2011, triggering a powerful tsunami and severely damaging the Fukushima Daiichi nuclear power station. This is the story of the struggle to regain control of the failing station, and to deal with the released radioactivity. It had been compiled from the continuing and excellent reporting by the Nature News team.

One of the largest earthquakes ever recorded slammed Japan's eastern coast on March 11, 2011, followed by a tsunami. Read more at thestar.com.

A timeline of the Chernobyl disaster.
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