Ahhh...yea. Thats how the atomic bomb was made (bombing of hiroshima for example). A simple chain reaction to release the energy stored uranium in atoms.
Nope. The whole thing is a hoax. Einstein never existed. E=mc2 is government propaganda designed to brainwash you. And all the moderators on this site are aliens. Congrats on uncovering the truth :).
If we're being pedantic its only the low velocity limit the whole truth is uncovered in special relativity. I suggest reading through the collected papers of Einstein. It's not as tough as it may sound because he has a great way of explaining his logic to all.