From round cities to space rings

humanistic social model could contribute to this, nuclear energy
should be relegated solely for strategic deterrence and rejected in
use for propulsion of ships or submarines, because to do so they
can be used without any problem other fuels with lower risk, it is
regrettable that arranged an inexhaustible energy such as solar,
man problems is sought using nuclear energy, this energy should
only be used in interstellar travel because it is the only place
where solar energy does not come.
But in space, it is likely that conflicts may take a little longer to
disappear because of the territorial problems that may arise in the
process of distribution and colonization of the solar system. This
happened previously when European nations strove to keep the
peace, but foreign disputes occurred over control of the colonies,
it would be desirable that in this case the process of colonization
of the planets is done in a more unbiased and objective.
Stun guns: It is also regrettable that today weapons of crippling
type are so underdeveloped, there are many conflicts in which
these weapons could be used and make it easier the work of law
enforcement without requiring resorting to the classic deadly
weapons, in cases like flight of the offender or aggression, these
weapons could solve the situation without bloodshed or fight, a
model could be a gun that would have two parallel chargers, one
would have normal bullets and the other stun bullets, these bullets
would consist of a liquid anesthetic darts once give your target
would cause loss of consciousness within seconds and several
minutes later would the effect.
The use of these weapons would make the work of the police
more humane and less dangerous for them as citizens, both as the
world evolves towards the end desirable crime.