In today’s modern era, science has advanced to the heights beyond imagination. In recent times it is being said that medical science might be successful in developing a formula to prolong average life span of human beings to about 100 years. Some think this will be a great achievement, others however feel that this might lead to serious consequences in future.
In my opinion, if humankind can achieve this challenging task of altering the natural way a human age it would be the biggest achievement in history of human kind. One reason this might be beneficial for us would be that space travel would become less troublesome in many ways. For example if humans can delay their aging process to an average of 100 or more years. It would be easy for scientist to send humans on voyages to different star systems or some extra-terrestrial world as they are light years away so it would take a lot of years to complete the voyage. Secondly body’s immune system would be a lot stronger to live that long which will save us from many deadly diseases caused by different viruses or bacteria or even cancer.
However, there might be the problem of over population that scientist might have to tackle if life expectancy increases which might result in shortage of land, food and also put a lot of strain on natural resources.
In conclusion, I would say that if scientist can increase the human life expectancy it would have massive impact on the future of humankind solving very many problems and also creating new ones. 
In  
today
’s modern era, science has advanced to the heights beyond imagination. In recent times it is  
being said
 that medical science  
might
 be successful in developing a formula to prolong average life span of  
human
 beings to about 100 years.  
Some
  think
 this will be a great achievement, others  
however
 feel that this  
might
 lead to serious consequences  
in future
.
In my opinion, if humankind can achieve this challenging task of altering the natural way a  
human
 age it would be the biggest achievement in history of  
human
 kind. One reason this  
might
 be beneficial for us would be that space travel would become less troublesome in  
many
 ways.  
For example
 if  
humans
 can delay their aging process to an average of 100 or more years. It would be easy for scientist to  
send
  humans
 on voyages to  
different
 star systems or  
some
 extra-terrestrial world as they are light years away  
so
 it would take  
a lot of
 years to complete the voyage.  
Secondly
 body’s immune system would be a lot stronger to  
live
 that long which will save us from  
many
 deadly diseases caused by  
different
 viruses or bacteria or even cancer. 
However
, there  
might
 be the problem of over population that scientist  
might
  have to
 tackle if life expectancy increases which  
might
 result in shortage of land, food and  
also
 put  
a lot of
 strain on natural resources. 
In conclusion
, I would say that if scientist can increase the  
human
 life expectancy it would have massive impact on the future of humankind solving  
very
  many
 problems and  
also
 creating new ones.