Nuclear fears grow as death toll escalates in Japan

Sendai, Japan (CNN) -- An escalating crisis at a nuclear power plant compounded the human devastation in Japan Tuesday.

Radiation levels at the plant have increased to "levels that can impact human health." The government imposed a no-fly zone over a 30-kilometer radius of the plant, and anyone within that area was urged to remain indoors. - Levels 'can impact human health'
Who's helping with recovery efforts?