Japanese government officials say the Daiichi plant may continue to release dangerous radiation into the air for several months.

The explosion is very big and many kinds of dangerous radiation are formed.

The atmosphere completely screens out all dangerous radiation from their sun.

By 1950, nuclear weapons were capable of destroying entire cities, and produced dangerous radiation.

Are you talking about dangerous radiation, from black holes, supernovas, all that?

Nuclear waste emits dangerous radiation and is difficult to dispose of.

Elaborate precautions had been taken to guard against dangerous radiation.

Spent fuel rods generate intense heat and dangerous radiation that must be contained.

But if there weren't any dangerous radiation, that would be a different matter.

The ozone layer is vital to life because it blocks dangerous radiation coming from the sun.