One of the larger long-term questions of our life-times is what to do with the radioactive waste-product produced by nuclear power plants. These plutonium rods will continue to emit deadly radiation long after they have served their use and long after anyone who coexisted with them will have decomposed in the dirt. With no real solution found, yet, we simply leave the burden to future generations, passing this waste on to others as time's arrow continues to move. Even buried, encased in concrete, and with all neutralizing measures in place, it does not matter, it will continue to poison anyone who comes in contact with it, its half-life lasting beyond all our lifespans. Even in a world with no need for energy, even when the human beings relocate to another planet, this nuclear waste will continue to release its radiation, buried in the ground. Its effects will last much beyond the scope of everyone who has worked with it, and everyone who will even know it. It is a poison that we sowed, and will reap for eternity, even much beyond when it has served its use. Its effect will last forever and can never be erased, only mitigated as much as people care to try. We cannot erase it from our history, no matter how much we try to. Above user is the same, I believe.