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Tsunami: why and where they originate and propagate.  A trip through the Earth's history from its formation to the present tectonic motions causing earthquakes and tsunamis. 

"http://yt.cl.nr/b9DMiy_DVok"

The "Fukushima disaster" clouds the merits of nuclear power, argues Martin Freer. The dramatic events that unfolded at Japan's Fukushima Daiichi nuclear-power plant after last year's tsunami are commonly referred to as "the Fukushima disaster." We need look no further than this description to begin to understand the significant misconceptions that surround nuclear energy.

Following the earthquake and tsunami in Japan, we discuss what is causing problems at the nuclear reactors in Fukushima. Explains the relevance of hydrogen, iodine, boron and zirconium.