The world needs a new source of energy, an unspillable source.

Why is nuclear fission not likely to be used?

Why is nuclear fission not likely to be used
directly for powering automobiles?
1. Nuclear reactions are harmful for the en-
vironment.
2. We haven’t found a good way to control
nuclear fission.
3. A fission reactor has a critical mass. Its
minimum size is too large to power a small
vehicle.
4. The power generated by nuclear fission is
enormous and cannot be reduced to meet the
needs of one automobile.
5. External nuclear radioactivity can harm
the driver.