[1010RD]

Here's a concise explanation of why the Yen rose.

There's more at the site.

[Carley]

This morning I hear that the G 7 has decided to lower the value of the yen to make exports more attractive. This will help the country’s economy in the short term.

[org.whodat]

Several nuclear power plants?????

no need to read any past that point, convinced me they did not know much.

[April Lexington]

After a massive earthquake and a nuclear meltdown, Japan's economy is on the ropes. Enter the likes of Soros to manipulate the currency. If the Yen rises, exports fall, putting more pressure on a shocked economy. Far be it from me to blame the likes of Soros...