If I wanted to blow up an Earth sized asteroid what type of bomb/warhead would I need?

You'd need to know the amount of cm2 the dust occupies. The you'd multiply it by 0.020 to get the mass of the dust. The mass of the dust is 20 percent of the asteroid's mass so you'd multiply it by 5 to get the asteroid's total mass.

After that, you'd have to divide it by 2 and you'd have the asteroid's volume or size in cm3.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.