Since nuclear power is clean, why is it not used more extensively in the united states?

Nuclear power may be clean but for the concern of people it is not recommend to use.The Chernobyl Nuclear Power Plant Explosion and the Three Mile Island incident have affected the world greatly.Bottom line nuclear power is dangerous and can cause radiation that won't disappear until a century.

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.