The Apprentice

How do any of us really know that we can't already time travel? I mean, the government would be in control of that stuff anyway, and there are things in History that we cant explain. I don't think this is the case, however: but its something to think about.

if someone were to melt down the ore thatis used to make magnets into a sphere, is it possible to make all the negative poles pointed toward the center and create a monopole on the outside? ( I know that the negative poles would repel each other, but if some thing had a strong enough pull, could it result in a monopole?)

I recently saw a video of someone truning a penny a silver color and then a gold color. I know he used sodium hydroxide and zinc powder, can anyone tell me how to make these 2 products?

Is there an easy way to do it? mabey by breaking it down with hydrochloric acid? but then that wouldnt give the end result i want...

Is zinc powder just crushed zinc?